Cosima Ybarra

Cosima Y.

Perris, CA
Teaching Locations:
Profile-location-online Online

About Cosima Y.

My main subject is voice but I also teach acoustic guitar, ukulele and songwriting for the student who desires to develop their own style and create their own songs. Not only is it fun but the music education that comes with it is highly valuable for future musicians. (guitar and ukulele rentals available at an additional cost to the student)

For students who are just beginning their vocal journey or are busy performers who want to improve healthy technique and sing with more confidence; or perhaps a worship leader or backup singer is struggling with vocal strain, my goal is to help them find vocal freedom and maintain an amazing, healthy voice that will confidently meet their expectations, year after year, in every situation, every time.

As an active performing vocalist, musician, songwriter, and Christian worship artist and band leader, I understand the demands and challenges of a busy performance calendar, singing sets for back-to-back audiences day after day and week after week, and the need for a vocalist to find the vocal freedom that will produce confidence in their voice no matter what the venue.

The first steps to mastering vocal freedom are the building blocks for vocal success. Whether the student is a child or an adult, with little or no training, it is my goal to make singing an enjoyable and freeing experience.

Singing with complete vocal freedom and confidence can seem very elusive. Surprisingly, it's not as elusive as one might think! Vocal freedom is within reach and most students experience a measure of it within the few first lessons, some even gaining a full octave in their range in their first lessons. Using a systematic method incorporating the study of good vocal technique and working on songs the student loves to sing makes learning more fun and gives the student a greater appreciation of music as a whole while encouraging a passion for music that lasts a lifetime. I encourage and teach sight reading, and theory basics especially for those students who are considering music as a profession.

*** Lesson Details ***
Each student learns with material that will be divided into step-by-step doable lessons so they can be sure to learn the best techniques and material along the way. Sheet music and lesson books and instrument rentals are provided at a minimal additional cost.

*** Studio Equipment ***
My home-studio is bright and open and set up with an upright piano, full length mirror, music stand, iPad with appropriate applications, guitar, mandolin, ukulele, and computer for recording and playback. Parents are welcome to sit in on lessons or wait for their children in the adjacent room. I also may provide a follow-up email which includes any recordings and lesson notes from the current lesson.

As the student progresses I also provide a PA system to teach mic technique and build performance confidence.

I ask that students come prepared with the following items to their lessons.
~ Bottled water
~ A ring binder with paper for notes and a zippered pouch to keep tools and handouts.
~ A flash drive for recording transfers or they can use their phone or other recording device to record their lessons.

*** Specialties ***
I honestly love my students and love teaching! It's such a privilege to be a part of their musical journey. I specialize in church worship vocals, choir, a capella, show tunes and musical theater. I teach free, healthy vocal technique which enables each student to explore and focus on different styles of singing. I also love teaching young voices especially teens who want to have a good time learning to sing.

NOTE ~ My teaching style is more structured therefore some young children may not be ready to take lessons with me.


Write a Review
24 Reviews
Lilia S.
Profile-location-online Online

Cosima is the Best!

Posted Apr 10, 2020
Profile-location-online Online

She is teaching my daughter proper breathing techniques while singing. She's great with my child.

Posted Jul 24, 2019
John R.
Profile-location-home Student's Home

Just finished my very first lesson with Cosima. I already learned so much. She really broke down that art of singing and made it very clear how the voice works. Then we did exercises afterwards which helped me know what I need to work on. Definitely need to check her out. She’s great!(:

Posted Nov 20, 2018
Malvina S.
Profile-location-studio Teacher's Studio

I had Cosima for a few months and I saw a change in my voice. Not only did she help me improve my voice but she was able to explain it in a way that I could understand the fundamentals of how singing happened. I had a song that I wanted to sing for my sisters wedding and if she didn't help I probably wouldn't have sang. I would like to say thank you to Cosima for helping me understand singing/vocal world. I was so new to it even though I have been singing from young age. She was able to help find my struggle in singing and we worked at it as much as possible to improve it. My chest voice and bridges definitely got better then what they were when I first started taking lessons with her. I have learned a lot and I have seen a difference in my voice. I'm really happy and blessed that I was able to have Cosima as my teacher. I greatly appreciate her teaching me. I recommend her as a great singing teacher.

Posted Aug 8, 2018
Kim T.
Profile-location-studio Teacher's Studio

Wonderful teacher.

Posted Mar 7, 2018
Profile-location-home Student's Home

A good initial experience.

Posted Mar 3, 2018
Marhnelle ..
Profile-location-home Student's Home

Cosima was perfect. She gave me so much to consider in preparation of wanted to enhance my singing abilities. I am very pleased and I would highly recommend her! M

Posted Feb 27, 2018
Profile-location-home Student's Home

We love Mrs. Cosima. She is very nice, has good sense of humor, flexible, on time. My daughter has learned good singing techniques.

Posted Feb 2, 2018
Tabitha A.
Profile-location-studio Teacher's Studio

This was the first lesson. There was a lot of education, but it seems important to understand the process. Looking forward to the next lesson.

Posted Dec 7, 2017
Kali B.
Profile-location-studio Teacher's Studio

She made my daughter feel very comfortable. Looking forward to more classes.

Posted Oct 12, 2016
Profile-location-home Student's Home

I have had my first few lessons with Cosima and she has been absolutely amazing. I am a beginner and she has made me feel comfortable throughout the entire process. Very professional, informative, and dedicated to her students. I look forward to more lessons with Cosima.

Posted Apr 30, 2016
Arthur R.
Profile-location-studio Teacher's Studio

Good singing teacher.

Posted Apr 5, 2016
David S.
Profile-location-studio Teacher's Studio

Very understanding, thoughtful, but does not waste time. Gets right to teaching techniques for your voice and your singing weaknesses. Also, takes her time to make sure you understand what she is saying and teaching. Efficient, effective, and fantastic. Cannot recommend enough.

Posted Dec 4, 2015
Lorene A.
Profile-location-home Student's Home

My teenage daughter is a bit shy. When she started with Cosima she had a nice, but untrained voice. Cosima has done a lovely job helping her to refine her voice and gain confidence. I know Cosima's teaching helped my daughter get into her very competitive High School choir. Cosima is a gem.

Posted Jul 25, 2015
Sophia M.
Profile-location-home Student's Home

First lesson, I liked how she started with explaining the different parts of singing. Chest, throat, nasal, and head. I think I am going to like this.

Posted Jul 22, 2015
Gabriela R.
Profile-location-home Student's Home

I am so glad that I had the privilege of meeting Cosima and having her as my singing instructor. Singing is something that I always loved and still do, so I was nervous to show my flaws, but Cosima was always very encouraging. She listened carefully and always tried to find a way to help me reach what ever goal we were working on. Even though I had so much trouble with my voice she never gave up on me, she always tried to figure out different exercises that would help me out. She always asked what she could do better as an instructor to help me reach my goal. One thing I loved receiving were my lesson notes, because I could look over them and remind myself on what I needed to work on. She is extremely understanding! And very patient! I miss my lessons with her! She is the most wonderful, down to earth person and is great at what she does!

Posted Jul 18, 2015
Doug D.
Profile-location-studio Teacher's Studio

I lost my singing voice after being hospitalized. Cosima has brought my voice back and beyond what it used to be. She has helped me overcome decades of poor singing habits. What a blessing.

Posted Jul 17, 2015
Kirsten O.
Profile-location-home Student's Home

Cosima is outstanding! My daughter loves her lessons is learning a lot! I recommend Cosima to anyone.

Posted Jul 3, 2015
Anne D.
Profile-location-studio Teacher's Studio

Thank you Cosima. I feel much more confident singing in front of people. I loved your positive, supportive guidance and feel like you've taught me how to keep improving even though my schedule does not allow me to take lessons at the present.

Posted Jun 8, 2015
Sandra T.

I've gain so much with each lesson from Cosima

I have never taken one on one lessons but when I was blessed with the opportunity to join my church's worship group I knew that I wanted to seek professional help.
Take lessons lead me straight to Cosima. She knows what she's taking about and is very helpful when it comes to making sure I understand every area of singing. I am very shy about singing but with Cosima makes me feel comfortable and she gives me many reminders that its ok to mess up, at her studio we're allowed to make mistakes. Little by little I can see myself coming out of my shell and begin to gain the singing confidence I was missing.
I look forward to our lessons together. and will encourage any student out there that is looking for a professional but also a person who cares about your singing growth and ability, to take Cosima as your teacher. you wont regret it!!

Posted Mar 6, 2014
Mary S.

Great Vocal Instruction, Great Teacher!

Cosima is professional & cares about her students progress! I had gave up on singing, she was my last attempt. My vocal ability has grown so much with her instruction. My passion for singing has grown even more since she has taught me how to sing and use my vocals properly. I have been making steady progress since the beginning. I look forward to our lessons, I love to sing! I feel that's its never too late to start singing, I believe she can help anyone become a singer! Thanks Cosima!

Posted Nov 4, 2013
sara M.

Aweomse vocal lessons

Comsima is an excellent instructor. She is always giving me positive feed back and is always willing to work around my busy schedule. I'm blessed!!!!!

Posted Jun 21, 2013
Kristopher M.

Cosima is one of the most down to earth vocal coaches I have ever met, one who truly wants to see her students become the best they can be.

After overcoming my fear of singing in front of a crowd, I decided to join the worship team at my youth group. With this decision I also got the privilege of taking vocal lessons with Cosima. She immediately makes the environment comfortable and reassures the student that no one is perfect and mistakes happen to the best of us.
I cannot count how many times I have compared myself to other singers, and Cosima is always there to remind me that the voice I have is more than enough.
Cosima also establishes a friendship with each of her students. She came to my first big performance at my high school talent show, which was something that I will never forget because it showed me how much she cares.
Her instruction is easy to understand and always beneficial to the student. Yes, I even tackled those high notes that I would normally not even attempt.
I recommend Cosima to anyone who is not only looking for a vocal teacher, but for someone also looking for someone who wants to see you succeed and will be there for you every step of the way. I cannot thank Cosima enough because she has helped me become the more improved tenor I am today.

Posted Jun 18, 2013
Julie G.

Cosima was there to help just when I needed it!

I was in town for only a few weeks to play a role in a musical production of the Book of Esther. Cosima was there to help just when I needed it! She took me as her vocal student at the last minute and helped me work out some weak areas and insecurities I was having with my voice.

Cosima is knowledgeable and able to see into your voice to help you get right to the issues you are dealing with. Her kind manner and energy helped me feel secure and ready to tackle those high notes and work on other weaknesses. When we were finished I felt as though I'd known her forever and my singing had improved greatly.

I'd recommend Cosima to anyone interested in getting over some vocal issues and to those who are just starting out.

Posted Jun 12, 2013

Photos & Videos

26 Photos & Videos


Associate Instructor
Nov 2015 - Present

Private company

Associate instructor of online live-chat lessons; vocal, guitar ukulele and songwriting.

Certified Music Instructor
Jun 2011 - Present

Rock University, Ca.

Associate vocal, guitar, ukulele and songwriting instructor and certified music instructor. Rock University Teachers Association, Escondido CA

Owner / instructor
Jun 2011 - Present

Home Studio

Private Home-Studio Owner: Voice, ukulele, guitar and songwriting. Vocal workshops and conference clinician. Customized clinics and workshops on location.

Director of Music Ministry
Nov 2000 - Present

Calvary Chapel Perris Valley

Organize, prepare and oversee technical and musical aspects of worship services and special events, plan worship sets and lead practice sessions. Lead band musicians and vocalists and give vocal instruction. Direct adult and children's choirs, and a cappella ensembles. Responsible for developing and raising up new musicians through conducting workshop, seminars and one-on-one instruction.


Various Music Studies (private and institutional)
Sep 1971 - Present

Includes Berkeley College of Music

Music and Worship Arts Studies
Sep 2001 - Jun 2002

Calvary Chapel School of Worship



Fluent / Native Proficiency


Limited Proficiency


Contemporary Voice Teacher
Nov 2018

John Henny Academy

Certificate of Completion, Contemporary Voice Teacher Academy. Successfully completed all coursework and testing in contemporary voice teacher training.
New Science of Singing
May 2018

John Henny Academy

Certificate of Completion, New Science of Singing. Successfully completed all coursework and testing in the New Science of Singing Course.
Introduction to Music Production
Sep 2014

Berkley College of Music

Introduction to Music Production Grade Achieved: 93.7% Completed with Distinction on September 13th, 2014 6 weeks | 6-8 hours/week Loudon Stearns Berklee College of Music
Developing Musicianship
May 2014

Berkley College of Music

Grade Achieved: 100.0% Completed on June 2nd, 2014 6 weeks | 4-5 hours/week George W. Russell, Jr.
Certified Music Instructor
Jul 2011

Rock University, Escondido CA

Certificate of Achievement for Music Instruction. Rock University Teachers Association, Escondido CA

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