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TESTIMONIALS

BAMBIE THUG

„I started working with Cornelia to unlock my screaming abilities and learn how to scream safely, including guidance through the Eurovision process. Her coaching combines a practical, hands-on approach with a holistic understanding of the voice — she’s both a mentor and a friend. I would recommend VOCALS ROCK to anyone wanting to improve their performance and confidence in their craft.“

LINNEA BERTHELSEN, ACTRESS

„Cornelia gave me a solid foundation and access point to the work that has been fundamental to how I work today. I’d highly recommend anybody starting out, or on a more advanced level to work with her. There is definitely something to learn from her at any level. She’s incredibly good, but also, she’s INCREDIBLY kind – such a gift to this industry.“

MARIA LESSING, FUTURE PALACE

What made you reach out for coaching in the first place?
„Our old label Arising Empire recommended you. Even though I already had a teacher, you were able to help me very well in an emergency situation and I noticed that you know very well what you’re talking about and already noticed improvement within the same day.“

What changed for you after working together?
„I got way better, safer and confident with screaming such as singing. My voice keeps up way longer on tour and you also gave me back hope with realizing how much you can reach by rehearsing, discipline and technique.“

Why would you recommend working with VOCALS ROCK to another singer?
„I already did and I will keep recommending you because you quickly give the right solutions how to take care of my voice, where my problem areas are at, not only vocally but also mentally. It also shows that your knowledge is based off of professional training and experience.“

RØRY

What made you reach out for coaching in the first place?
„I originally reached out because I wanted to bring more screams into my music and knew I wasn’t doing it healthily. I’d started having some vocal strain in the studio and on the road, and I knew I needed to get healthier and more sustainable with my voice.“

What changed for you after working together?
„Working together has completely changed my confidence and understanding of my vocals. I’ve learned so many practical tips and techniques for finding different distortions safely. I genuinely thought heavy vocals might just not be for me, but you’ve shown me that isn’t true. I feel more agile in the studio, more confident live, and I’m no longer losing my voice … which is amazing!“

Why would you recommend working with VOCALS ROCK to another singer?
„I would recommend working with you to anyone in rock or heavy music who wants to improve their vocals. Your depth of knowledge is amazing, especially around touring, which can feel really daunting as an artist. You’re also incredibly kind and clear in the way you explain things, which makes the whole process feel safe and empowering at any level.“

ABRAXAS, BLUTHUND

„I wanted to work with someone who could help me become more confident and better at shouting and singing and luckily Conny was recommended to me!
I didn’t just receive useful tools, but everything was tailored individually to me and my strengths and weaknesses.
The outcome: singing higher notes and screaming in a more relaxed and confident way!
Anyone looking for a truly versatile coach is in exactly the right place with Conny!“

MARCUS BISCHOFF, HEAVEN SHALL BURN

What made you reach out for coaching in the first place?
„Unfortunately, I went through the terrible experience of losing my voice during a live show, which forced me to cancel the performance. I had essentially injured myself and needed a proper recovery and rebuilding phase, so I turned to professional help. Because of her strong reputation and professionalism—especially when it comes to healthy vocal development and recovery—I decided to work with Conny from VOCALS ROCK.“

What changed for you after working together?
„Simply everything. Before, I had never really thought about my voice. Warm Ups, technique and post-performance recovery weren’t even on my radar. Conny and I tackled all of that, and as a result, we were able to prepare my voice properly for what I actually need it for: Extreme Vocals.“

Why would you recommend working with VOCALS ROCK to another singer?
„Quite simply: VOCALS ROCK (Conny) works at the highest professional level and has built extensive experience over the years with artists from all over the world. She uses this experience to support each client in a holistic and highly individualized way. Mental support is also a key element and something Conny places great importance on. This approach, combined with her technical expertise, makes her the perfect vocal coach for me. I can wholeheartedly recommend her to anyone who wants to take their voice to a new professional level.“

RICKY ARMELLINO, HAWK & ICE NINE KILLS

„I was on tour singing for HAWK and we were touring with FUTURE PALACE. Anyone who has ever seen them live knows how incredible Maria is. I got the chance to ask her a few questions, and she told me about Conny, so I reached out and said I wanted to work with her.
Conny helped a lot of things click for me very quickly. Her approach is very somatic, focusing on what’s happening in the body — singing certain lines in specific positions, moving in certain ways and that made a huge difference for me. Most vocal instruction I’d experienced before was very different and I honestly felt that Conny’s approach was one of a kind. I would recommend her to literally anyone.“

JOSH TAYLOR, THE HARA

„I got recommended Conny through fellow musician/artist and good friend Harry (aka Kid Brunswick). Even though I’ve been a vocalist for a few years and had training before, I’m still very new to using screams safely and brutal vocal techniques but since working with Conny over the last 12 months my knowledge and vocal skill in this area has improved massively, she´s extremely patient and has really opened my eyes to really understanding that in the extreme vocal world less really is more and she has guided me to be able to trust myself at lot more too. But the one thing about Conny above everything else is that she is way more than a vocal coach. She understands how hard it is in the world of touring and how much your mental state and environment affects you more than anything and so she has almost been like a mentor to me in that sense. There’s been multiple occasions when I’ve reached out to her on tour in a time of need and she’s been there to reassure me and even hop on last minute video calls, which shows just how much she really cares about her clients.“

BEAT SCHMUTZ, SCHMUTZKI

What originally led you to work with VOCALS ROCK?
„As the singer of a punk band, the idea of vocal coaching was never really on my radar. But over time, with lots of singing on stage and in the studio, more and more problem areas started to show up in my performance and vocal stability. A good friend recommended Conny to me, and I’m grateful he did.“

What has changed for you after working together?
„I wouldn’t say that I necessarily sing better, but I sing much more consciously. That gives me a sense of security that carries over into my voice and makes an audible difference.“

Why would you recommend VOCALS ROCK to others?
„Working on your own voice requires a certain amount of courage and letting go of embarrassment. Conny immediately gave me a good feeling and created a supportive space to really engage with the exercises and get to know my voice better. Her tips and tricks were directly helpful, and it’s genuinely fun working with her.“

DANIEL HERMANN, ASHES OF BILLY

What made you reach out for coaching in the first place?
„I wanted to learn how to sing in a healthy way without wrecking my voice, especially to learn this before actually injuring it.“

What changed for you after working together?
„I learned how to sing safely, how to control my breathing properly and how to really “lean into” my voice when singing, which helped me a lot.“

Why would you recommend working with VOCALS ROCK to another singer?
„Because the progress is real and it’s genuinely fun and incredibly helpful. I learned way more than I expected, and it’s already saved me in a lot of different situations.“

RIKKE EMILIE LIST, KONVENT

„I reached out to Cornelia in order to work more focused on my high pitch screaming. On top of helping me with the proper high pitch technique to avoid vocal pain, Cornelia has helped me implement an array of other metal vocal sounds to my repertoire as well as clean singing. Not only is Cornelia a highly skilled teacher she also manages to create a safe and fun working environment.“

HARRY JAMES, ALIVIEN, KID BRUNSWICK

What made you reach out for coaching in the first place?
„I have never properly trained metalcore / screaming vocals and my voice was very inconsistent, and on tour my voice would become extremely tight and strained.“

What changed for you after working together?
„Working with Conny really helped me understand that my voice is a physical instrument, and there are so many things to explore that I hadn’t done before. Conny has so many exercises that help me open up my voice and work on techniques I’d not come across. I now sing and scream without damaging my voice.“

Have you recommend working with VOCALS ROCK to another singer?
„Yes, I already have.“

MIMI BARKS

What made you reach out for coaching in the first place?
„Working with Cornelia has completely transformed my metal vocals. Through her deep understanding of breathing, technique, and projection, I’ve built significantly more stamina on stage and can perform longer sets with consistency and control.“

What changed for you after working together?
„What really stands out is how her exercises activate true muscle memory. Even under pressure, my voice now knows exactly what to do, allowing me to scream safely, powerfully, and on demand without strain. The technique has become instinctive.“

Why would you recommend working with VOCALS ROCK to another singer?
„Cornelia is an exceptional metal vocal coach, combining technical precision with practical, real-world results. I can confidently say my voice is stronger, more reliable, and more fearless because of her teaching.“

DANIEL KUHLEMANN, TENSIDE

What made you reach out for coaching in the first place? I first sought out vocal
„I had a great conversation with Cornelia at the Reeperbahn Festival in Hamburg. From her very first stories and insights, I immediately had a good feeling — the perfect choice for starting my new vocal coaching journey.“

What changed for you after working together?
„More confidence in my voice, whether screaming or singing clean. Better technique and endurance through our sessions, and overall a much deeper understanding of my instrument, the voice.“

Why would you recommend working with VOCALS ROCK to another singer?
„Cornelia´s patience and understanding of each voice’s individuality, combined with her friendly way of working, creates a safe and supportive space to learn new things or further develop what’s already there. 5 stars and a smooth vocal ride 🤘🏻“

TIM ROGLER, DAGGER THREAT

What made you reach out for coaching in the first place?
„Being a vocalist who performs on several shows and tours throughout the year, it’s important for me to take care of my instrument. I started following Conny on Instagram to get useful tips, and after a while I decided to sign up for coaching to prepare my voice for the next tour. Reels and DIY lessons can be helpful, but since every voice and body is different, I wanted support that was specifically designed for my individual needs and circumstances.“

What changed for you after working together?
„I now have a tailored vocal warm-up that helps me get into the zone quickly and deliver consistently night after night. Conny’s technique coaching helped me understand exactly which “buttons” to press to reach the tone I need. On top of that, the cool-down routines after shows and survival tips for being on the road have been incredibly useful. Overall, her coaching gave me the confidence and security to know how to perform and react on and off stage.“

Why would you recommend working with VOCALS ROCK to another singer?
„Working with Conny is personal and hands-on and not a one-size-fits-all approach. If you want to build solid technique, endurance, and long-term vocal health for live performance, working with her is definitely a no-brainer.“

DAVE COLLIDE

Hi, this is Cornelia from Vocals Rock…“ – „These words popped up completely random on my Instagram in 2021, and it was like it had been ordered. Around that time, I was having serious problems with my vocal cords, struggling with inflammation, and was on a doctor-prescribed break from singing for weeks. Overkill when you want to make a living from music, so I got in touch with Cornelia and worked with her on my voice every two weeks via video call to prevent such injuries in the future. I realized later that I was also expanding my vocal range and felt absolutely boosted and confident on stage as a performer. I’m super grateful for that. To this day, Conny is always there with advice and support, even in emergencies like when I’m backstage before a show and my voice doesn’t seem to work that day. If I get stuck, I know where to turn. Thanks, Conny!
If YOU would like to develop your voice, learn warm-ups and vocal technique and how to really nail your instrument, spend some time with Conny; it’s absolutely worth it.“

JASPER ROELOFSEN, STATEFALL & THE LAST ELEMENT

What made you reach out for coaching in the first place?
„I was struggling with getting my screams ready for live shows so I decided I wanted to learn more and improve.“

What changed for you after working together?
„I got a lot of more technical insight, what to do to properly support my screams and also improve my cleans. Cornelia really knows a lot about every technique there is, working together really gave me ways to improve myself and get to the next level.“

Why would you recommend working with VOCALS ROCK to another singer?
„I would recommend everyone to give it a go, from beginner to expert, there is so much to learn and Cornelia has so much to offer, she really knows how to analyze your voice and give you the exceesises and insight you need to improve.“

DIMITRA KALAVREZOU, UNVERKALT

What made you reach out for coaching in the first place?
„I reached out because I wanted to improve my technique and find my way through extreme vocals. I didn’t really know what I was doing, and I felt insecure about possibly hurting my voice while trying to find the right extreme sound. Your approach felt real and inspiring, which made me reach out right away.“

What changed for you after working together?
„After working together, I feel more confident and supported with my voice. I have a more consistent practice routine, I feel safer, and I’m ready to explore even more. One of the most important changes is that I’ve realized that specific areas needed more attention, things I hadn’t noticed before which I now work on to achieve an even healthier way of singing.“

Why would you recommend working with VOCALS ROCK to another singer?
„I would recommend this coaching to any singer who wants healthy vocal technique, both clean and extreme. It helps you find your true voice, and build confidence. What’s especially important to me is that, except the technical support, the coaching also focuses on mindset. Many singers including myself, struggle to truly believe in what they do and to fully embrace their voice, and these lessons are making a real difference.“

WIANNE HAERTLEIN

What made you reach out for coaching in the first place?
„A fellow Volbeat fan (from Florida) referred me to VOCALS ROCK. I started following on instagram and your style and content really spoke to me. I’ve always wanted to learn how to sing with distortion and learn about extreme vocals. After a while I reached out as a gift to myself.“

What changed for you after working together?
„What changed for me after working together is that I learned that there is a whole world in singing I didn’t know about even though I’d been singing all my life. I learned the value of vocal coaching. The tools you gave me to take good care of my voice, the exercises that helped me sing with power, but also with ease and the confidence I gained through getting to know my specific voice better means the world to me. It has made singing easier, more relaxed and so much fun. Thank you for that!“

Why would you recommend working with VOCALS ROCK to another singer?
„Why I recommend working with VOCALS ROCK is: The top notch, no bullshit, specifically tailored exercises for you as a client are unlike anything I’ve ever seen anywhere. Working together feels effortless and I always look forward to the next time we meet. Whenever I get questions about my vocal tools, warmup exercises or anything I’m doing for my voice I often recommend people to ask VOCALS ROCK for specifics for their situation. Because I know that the tools I use are specifically designed to support my voice and VOCALS ROCK is incredibly powerful at individual guidance specifically tailored to your situation and needs. Short answer you’re incredible.“

JANICE CHEANG

What made you reach out for coaching in the first place?
„I first sought out vocal coaching because I wanted to give my high notes more power and projection, and to sing in a way that felt both technically correct and sustainable. I believed that with the right technique, I could protect my voice, sing more effortlessly, and build the stamina needed for multi-song performances—ensuring I could deliver my best throughout an entire set.“

What changed for you after working together?
„Working with Cornelia helped me gain much better support and strength in my high notes. She also pointed out details I hadn´t noticed before, like dynamic contrast, clarity of pronunciation and emphasis within phrases. Beyond that, she shared practical routines foor maintaining vocal health – how to warm up efficiently, relax my cords, protect my voice, and troubleshoot on-the-spot issues during live performances.“

Why would you recommend working with VOCALS ROCK to another singer?
„If you have a chance, I highly recommend learning and exchanging ideas with Cornelia. She offers so much insightfull feedback and clear solutions to vocal challenges. Taking lessons with her truly took my singing technique to the next level.“

DANY HOROWITZ, SCHMUTZKI & HOROWITZ & RUINEN

„Extremely professional and personable coaching that I’ve already recommended several times. Thanks to Conny’s coaching, I was able to take my singing to a whole new level in a very short time. What really stands out is her exceptionally broad range — from vocal technique and vocal health to psychological and social perspectives that are essential for artists. Conny truly knows her craft.“

KRISTIAN ELLINGSØE

What made you reach out for coaching in the first place?
„I had tried for my own for so long and had multiple vocal teachers, but I still felt like my development was very slow or not developing at all. Plus, I wanted to work with someone who actually knows about the styles and techniques used in the music i love (rock, metal)!“

What changed for you after working together?
„I have gotten a deeper understand of what it is that I’m feeling in my body when singing, anatomical factors that come into play and how they impact my performance. This has made it easier to sing my higher ranges and given me a sense of direction and understanding of where I need to practice and improve. On top of that, I have been introduced to harsher vocal styles that I’ve feared to explore until now!“

Why would you recommend working with me to another singer?
„Cornelia provides a safe space where the energy is dynamic and highly productive! I always felt great after a lesson. She has large variety of exercise to fit your goal, and clearly explains the relation between the exercises and the anatomy.“

NICLAS PREETAM (VINCENT WOOD)

„I joined Vocals Rock from 2020 to 2023 to improve my singing for my artist project. I learned a lot of great vocal techniques and developed my voice so much during that time. I’m truly grateful for the lessons, and Cornelia is such a kind and inspiring teacher.“

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