Marc Gelfo

Marc G.

San Francisco, CA

Lesson Details

French Horn

Levels Taught:
Beginner, Intermediate, Advanced
Expect to learn faster and funner while exploring valuable skills & musical ideas each lesson!

My 30 years in music has taken me around the world performing with San Francisco Symphony, Broadway Musicals, Operas, Rock Bands, and more.

I've worked with thousands of pro musicians & students on 3 continents. Teamwork and respectful collaboration are core values.
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Marc teaches



Marc passed a background check that includes a SSN verification, national criminal record check, and sex offender registry search. Learn More
Marc delivers an exceptional lesson experience and ranks in the top 15% of our teachers nationwide.
Teaches students:
Ages 5+ and special needs

Teaching since:

Hi I'm Marc, a professional French hornist & founder of a music edtech startup in San Francisco.

I am so excited about helping musicians learn and achieve their goals. Everybody has musical talent. But far too often, music learners don't get the right teacher to help them express that talent.

Even though I started playing music at age 5, my own talents stayed hidden for far too long. I struggled at music all through middle school and high school. When I was 18, I went to Northwestern and studied learning sciences.

Ho ho ho! After graduating I applied science to learning French horn, studied at America's #1 music school (Indiana University), and got a full time orchestra job in just 2 years. I played 6 seasons with Hong Kong Philharmonic. I also served as Professor of Horn at HK Baptist University.

After learning Kung Fu & Yoga, I applied those to music, and my career went even further. I've recorded & toured with San Francisco Symphony, played with Yo-Yo Ma, and even run my own music learning camps.

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Sep 2017 - Present

I founded my company to apply my learning science expertise to music practice, building an app to make music practice 10x more efficient. My company is currently in a Silicon Valley startup accelerator and I am excited for our 2018 launch!

Freelance Musician
Jun 2015 - Sep 2017
Practice Living Music

Performing with San Francisco Symphony, Palm Beach Symphony, and other ensembles around the world, as well as teaching & consulting.

Principal Horn
Sep 2014 - Jun 2015
Florida Grand Opera

Such a joy to perform opera, but I had other ambitions to fulfill so left after a year

Tutti Horn
Aug 2008 - Jun 2014
Hong Kong Philharmonic

I played full-time with the Hong Kong Philharmonic for 6 great seasons!


B.M., French Horn Performance
Sep 2004 - Nov 2006
Indiana University Jacobs School of Music
B.A., Cognitive Science
Sep 2000 - Jun 2004
Northwestern University


Fluent / Native Proficiency
Mandarin Chinese 普通話
Limited Proficiency


American Federation of Musicians
Sep 2014

A labor union representing professional musicians in the United States and Canada. Founding in 1896 as the successor to the "National League of Musicians," the AFM is the largest organization in the world representing the interests of professional musicians.

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Photos & Videos

An intro to the work I do combining music & tech to help musicians learn faster.
With workshop attendees: I work with all sorts of musicians.

Leading the horn section of Palm Beach Symphony

Playing 55 shows of "Wicked" in Hong Kong

Mom's Testimonial: "The way you taught the boys was very useful and effective. Most important, they learned to appreciate music"

Me teaching French Horn Yoga @ International Horn Symposium, Los Angeles


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