The Team

Our team includes several vocal instructors with varying specialties, as well as an artist development coach and a regular showcase band.  Our studio administrator and manager are also heavily involved in music, so we know how to speak your language.

We work more like a team rather than as a loose collection of teachers who happen to share a roof (well, three rooves).  Often, students work with one instructor for voice and with Justin for strategy or stage work.  Or we share tips and techniques, or bring another teacher to sit in, when we find a student staying plateaued for too long.  We’ve even been known to recommend a different teacher at Performance High if that’s the best thing for the singer.  We’re a stronger team when we work together.

Click on the photos to learn more about each teacher, or contact us and we can recommend the right teacher for you.  You can also read what our clients have said on our testimonial page.


Studio Owner and Vocal Instructor

Adrienne Osborn

Studio Owner and Vocal Instructor
Studio Manager and Vocal Instructor

RaeLynn Martinez

Studio Manager and Vocal Instructor
Studio Administrator

Kellie Gurule

Studio Administrator

Vocal Coaches

We ensure quality across all teachers, regardless of genre specialties, by participating in regular knowledge-sharing and cross-education within, and outside of, Performance High.  All teachers have passed a background check to ensure student safety.  All teachers are also active in the Denver music scene, whether it is performing with their own bands, in studio work, or running other music-related businesses.  

Genres and Specialties

Although each teacher has a specialty, don’t worry if you don’t see your genre or sub-genre listed here.  Every teacher is quite versatile.  The underpinnings of voice are the same across all popular genres.  Genre techniques diverge at a fairly high level, above the foundation of healthy singing.  (For example, you need to learn breath support and how to mix whether you plan to drop some complicated riffs, shatter glass with a high belt, or scream.)

Adrienne Osborn

Founder and Owner
Pop, Rock, Soul, R&B
Denver: W/Thu 12-6:30
Broomfield: Sun 2-6 biweekly
Lone Tree: Tu 2-7 biweekly
Specializes in touring and signed artists and adult vocalists.
Learn more

Cody Qualls

Pop, Rock, A Cappella, Country, Musical Theatre
Lafayette: Schedule varies.
Specializes in touring and signed artist vocal development.
Learn more

Kristin Henry

Pop, R&B, Country, Musical Theatre, Classical
Broomfield: Tu/Thu/F 11-6
Great with pre-teen, teen and adult singers of all levels and all genres except hard rock.
Learn more

Tyler Hall

Rock, Metal, Blues, Pop
Denver: M/Tu/Thu/F 11-7, Sun noon-5pm, occasionally Sat
Great with rock singers, modern pop singers, and anyone who appreciates a detailed, technical approach.
Learn more

Emma Wallingford

Pop, R&B, Soul
Denver: M-F 3:30-9, Sa-Sun 5:30-9
Great with pre-teen, teen, and twentyish pop, R&B & soul singers. Learn more

Connie Hong

Jazz, Pop, R&B, Musical Theatre
Denver: Mon 1:30-5, Fri 11-2
Great with beginning through advanced vocalists teens and up.
Learn more

Rachel Irvin

Jazz, Rock, Musical Theatre
Denver: M/W 11-9
Great with young jazz, rock (including hard rock), and musical theatre singers as well as injured vocalists. Learn more

Chris Mercer

Rock, Pop
Aurora: Mon, Tue, Sat
Great with intermediate through advanced teens and adults.
Learn more

Joe Mondragon

Pop, Rock, R&B, Musical Theatre
Broomfield: Mon 3:30-8
Great with beginning through advanced vocalists, kids and up.
Learn more

MaryLynn Gillaspie

Jazz Stylings Specialist
Lafayette: Tue, Fri, Sat, Sun
Great for experienced jazz singers (knowledge of jazz standards required).
Learn more

RaeLynn Martinez

Performance High Admin and Instructor
Pop, Rock, R&B, Soul
Denver: Mon 2-8
Broomfield: W/Thu 3:30-8
Lone Tree: Tu 2-7 biweekly
Great with beginning through advanced vocalists of all ages.
Learn more

Megan Glover

Musical Theater, Pop, Indie
Lone Tree: Fri 3:30-8
Great with beginning through intermediate vocalists, kids through adults.
Learn more

Rachel Eisenstat

Rock, Jazz, Pop, Folk, Blues
Broomfield: Mon 12-8, Tuesday 12-5
Great with beginning through intermediate vocalists, teens through adults.
Learn more

Artist Development Coach

Justin provides our artist development services, teaches our classes, teaches private guitar lessons, and is the musical director for showcases. 

Justin Leighton Long

Artist Development Coach and Musical Director
Denver: M-Sa 11-7
Other studios by appointment
Great with emerging and established artists from teens up. Learn more

Showcase Band

Our showcase musicians love helping singers find confidence and have fun both during rehearsals and showcases.  Many of them are educators as well, and work with students of all ages on a regular basis.  We are usually able to bring the same band together for every showcase, helping singers feel more at home the more showcases they perform.  When needed, we dip into a long list of top-tier pro Denver musicians.

Justin Leighton Long

Justin was a founding member, lead guitarist and songwriter for the band No Address. No Address released Time Doesn’t Notice on Atlantic Records and toured North America extensively, with their debut single “Sadie (When I’m Gone)” standing at #11 on the Billboard Radio charts for 22 weeks. As a recording engineer and producer Justin has worked for bands signed to labels including Atlantic, Elektra, Immortal, Wind Up, Curb, Blind Bat, S-Curve, Victory, Blues Legacy and J Records.
Ryan Elwood - Drummer

Ryan Elwood

Ryan Elwood is a drummer, producer, and composer based in Denver, Colorado. During his career he has played at venues such as Red Rocks Amphitheater and the Gothic Theater as well as at festivals including the Underground Music Showcase and Bohemian Nights at NewWestFest. Ryan has been a working musician since age fifteen, playing styles as varied as pop, rock, country, folk, R&B, blues, jazz, and theater. He spent several years refining his improvisational skills with jazz artists George Keith and Eric Dorn before joining indie-rock group FaceMan. Since then, Ryan has become an in-demand sideman, performing and recording with artists and bands including Buckstein, Adrienne O, Doug Haywood, Natalie Walker, Craig Haller, and Automatic Iris.
Kenny Martinez - Bass

Kenny Martinez

Born and raised in Colorado, Kenny attended the Colorado Springs Conservatory, where he studied with Air Force bassists JR Erb and Jason Crowe, and then studied Jazz and Commercial Music at the University of Denver, taking lessons with Ken Walker. Kenny has been gigging professionally since 2008, performing jazz, dance band/wedding rep, musical theatre, blues, traditional Irish, and folk music with groups including including Beryl Beloved, The Tickle Mafia, the Jenny Shawhan Band, Avourneen, The Ghetto Fancy, Disc Horse, and Moment’s Notice Entertainment. Kenny also has a solo bass project, where he uses a looping pedal and a variety of effects to create original music and unique renditions of popular music spanning a wide range of genres.
Bryan Stacks - Keyboard

Bryan Stacks

Versatile and very active in the music scene, Bryan focuses on instruments with 88 keys and 6 or 4 strings. He plays keys, bass, or guitar – and sings backup – in various bands including Echoes in Reverie, Hold Me Hostage, My Own Summer, Adrienne O, and the Tom Petty Project.
Jacob Larson - backup vocals

Jacob Larson

Backup Vocals
Jacob Larson is a funk/R&B vocalist trained for the last nine years at Performance High, currently pursuing a degree in Music Performance and Music Business at CU-Denver. He performs with the Diamond Empire wedding band, Adrienne O, Performance High, and his own millennial funk party band, the Jacob Larson Band. He regularly shares the stage with Colorado musical luminaries such as Hazel Miller, Erica Brown, and Chris Daniels. $40-$100