Billy Duffy

Billy D.

New York, NY
100% Satisfaction Guarantee

100% Satisfaction Guarantee

We know that starting lessons is a big step and we want you to feel confident booking with us. If you are not completely satisfied, we'll help you find a new teacher or you can receive a refund for any unused lessons within the first year from the date of purchase.

Lesson Details

Music Theory

Levels Taught:
Beginner, Intermediate, Advanced
Music theory is an essential tool that every musician should possess. Many people struggle to understand music theory and are often intimidated by it, but I am here to tell you that you shouldn't. Through many years of study I have developed my own approach to music theory that others have found much simpler and more enjoyable.
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Billy teaches



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

Teaching since:
January 2012

I am a professional trombonist/guitarist living in New York City. I recently finished my Bachelor's Degree in Music Performance at the New School For Jazz and Contemporary Music. I have a lot of performing, touring, and teaching experience, performing in venues such as Carnegie Hall (Stern Auditorium and Zankel Hall), Dizzy's Club Coca Cola at Jazz at Lincoln Center, The Jazz Standard, Smoke Jazz Club, and many other venues around the city. I have several guitar and trombone students, but include music theory, composition techniques, and ear training into my lessons as well. I have experience in a variety of different styles of music. I really enjoy sharing my love for music with my students, and my main priority is making sure that my students' learning experiences are as efficient and enjoyable as possible.

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Freelance Musician
Jan 2012 - Present
Self Employed

Performing, composing, and recording

Jun 2018 - Jul 2018
JMI Jazz World Orchestra 2018

Latin Jazz big band of musicians from around the world. Toured Macedonia, Bulgaria, Serbia, Slovenia, and Croatia

Jul 2017 - Jul 2017
JMI Big Band 2017

International jazz band. Toured Croatia, Italy and Slovenia.

Sep 2013 - Jun 2014
New York Pops Orchestra

Aug 2013 - Jun 2014
Jazz at Lincoln Center Youth Orchestra

Jun 2012 - Jun 2014
York College Blue Notes

Teaching Artist
Feb 2014 - May 2014
New York Pops Kids on Stage

Teaching Artist
Apr 2013 - Apr 2013
Corna Music Project


Jazz Trombone
Aug 2014 - May 2018
New School For Jazz and Contemporary Music
Instrumental Music
Sep 2010 - Jun 2014
Frank Sinatra High School for the the Arts


Fluent / Native Proficiency


Bachelor of Fine Arts with Honors
May 2018
New School for Jazz and Contemporary Music


Award for Excellence in Instrumental Music
May 2013
Frank Sinatra School of the Arts
The Musicianship Award for Excellence in Music Theory and Composition
May 2012
Frank Sinatra School of the Arts


International Trombone Association
Sep 2015

The general purposes of the International Trombone Association shall be: To promote communications among trombonists around the world, to improve the artistic level of performance, teaching, and literature associated with the trombone family and to function as a clearing house for trombone-related ideas and information

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Photos & Videos

Billy Duffy rehearsing with the Stephen Santoro Orchestra at Swing 46 in NYC. Solo at 0:45.
Billy performing with the Baden Goyo Septet.
Solo at 2:20
Billy performing the song "Downpour" with Aberdeen at National Sawdust
Billy performing Where Y'At by Trombone Shorty with Aberdeen at National Sawdust
Billy performing with the 2018 JMI Jazz World Orchestra in Groznjan, Croatia
JM Jazz World Orchestra bowing after performance in Zagreb, Croatia

Billy in the studio recording horn parts for Sideway Paving Co's recent album

Billy and the rest of the JM Jazz World Orchestra trombone section in Ohrid, Macedonia

Billy and the rest of the JM Jazz World Orchestra trombone section in Ohrid, Macedonia
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16 Reviews

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Corey Aug 31, 2018
Guitar · In studio

This was my first lesson ever and Billy was extremely patient, took the time to teach me music theory. Looking forward to the next lesson.

Karolina Aug 11, 2018
Guitar · In studio

Billy is a very good and patient teacher. He understands that it takes time to learn something completely new (which for me is music theory) especially when besides the lessons you also work full time. My previous teacher didn't have that patience which makes me value Billy's approach even more. He will do his best for you to understand whatever topic you're struggling with. Highly recommend

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Emma Jul 24, 2018
Acoustic Guitar · In studio

This past month I have been taking guitar lessons with Billy. I really love it! He makes guitar seem less intimadting then I thought it was. He is very patient and he seems to really care about teaching. I highly recommend.

Niamh H. May 16, 2018
Trombone · In home

Billy was really kind and patient with my 8-year old son and did a great job helping him to convert from the French solfege system of music reading.

Claudia M. Apr 22, 2018
Acoustic Guitar · In studio

Being a beginner (guitar) I attended my first class with a positive mind and no set expectations. I left class joyous, as Billy mastered to introduce me to guitar theory in such a simplified manner, which made it easy to grasp. I attended my second class last week, and feel that I have advanced/internalized greatly in such a short period. Further, I appreciate that Billy has always been prompt to attend my inquiries. Based on the aforementioned experiences, I look forward to my upcoming classes, and I’m very curious to know the end result - without hesitation, I'm certain it will be positive. Billy is a very gifted guitar teacher, hope he can teach for many years to come - as many can benefit from his great talents.

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Raymond Apr 20, 2018
Guitar · In studio

I cannot say enough about Billy. At first I wasn’t sure what to expect. Billy put me at ease immediately. I find him professional, friendly and extremely considerate. He also tailors each lesson to his client. I wanted to delve more into theory. Billy knows his stuff across a spectrum of instruments. He wrote music for me and gave me the building blocks for more skills. I can see Billy really loves music and teaching. It shines through every time I see him, and that makes me more hopeful. I’d say that’s as much as you can ask for a teacher.

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Leland V. Apr 10, 2018
Guitar · In studio


Melinda Mar 6, 2018
Guitar · In studio

Great Instructor!

Rosdeli Marte Mar 3, 2018
Ear Training · In studio

Billy's approach to ear training really helped me a lot! He went at my pace and made references to popular song a to hear chords that, without context, are hard to hear. He accommodated to my way of learning and went from there. I still use some of the methods he's taught me till this day!

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Ros Feb 15, 2018
Music Theory · In home

Billy is the absolute best! Transcribing rhythms and ear training analysis have always been my weaknesses when it comes to music theory knowledge and finding the right exercises and techniques to improve has always been quite a difficult process to achieve. However, within just a few tutoring lessons from Billy, I started to build a better understanding of music theory as a whole. In every tutoring lesson, Billy was patient, knowledgeable and friendly which quickly benefited my musicality and strengthened my overall friendship and love with music. Thank you Billy!

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Gabriella Feb 14, 2018
Guitar · In home

I've never played Guitar before and since trying to play, I have met so many teachers, none of them really helped and were impatient, but having had Billy as my instructor, I have picked it up so quickly. Its only been a few weeks and I'm playing my favourite tunes. I highly, highly recommend! Very sweet and patient teacher, i'm still taking lessons with him :)

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Laura Feb 2, 2018
Acoustic Guitar · In home

Billy is a gifted musician who is patient and explains everything clearly for a novice. Really enjoying my lessons

HEnry Jan 3, 2018
Trombone · In studio

I'm a classical trombonist by training and reached out for help with jazz theory and playing. Billy was an amazing resource who helped me develop concrete playing and practicing skills and become a more confident improviser. He was extremely patient and thorough and took extra time to make sure things would stick. Highly recommended!

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Misia Dec 27, 2017
Music Theory · In studio

Billy is a great teacher! He really knows a lot about Theory and he really helped me in detail with how to get something right. I would recommend Billy for any teaching job, he's really great! Thanks Billy! :)

Johannes Dec 21, 2017
Trombone · In studio

I played the trombone when I was a kid but lost interest back then. After not playing for about 15 years Billy helped me to get back to it. We covered reading notes, learning a little bit about music theory (keys etc) and of course playing. I wanted to practice with some songs I like and Billy was able to write the notes down for me. This was super helpful and really made me enjoy playing the trombone again! We practiced in a room in the New School, which was cool since I could play as loud as I wanted, compared to back at home where I usually use a mute. He was very patient and friendly and I can highly recommend him as a teacher.

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Rosey Jul 7, 2016
Trombone · In home

Excellent with my 12-year old child, on-time, stays longer to finish lesson. Great communication skills, well rounded.

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