News and Updates
O.M.F. That's So Fetch!
June 2026 - August 2026
I'm so excited to be wearing pink all summer in Arts Center of Coastal Carolina's production of Mean Girls!
The Civilians' R&D Group Semi-Finalists
October 2025
My writing partners, Emily Boyd Dahab and Colm Summers, and I were announced as semi-finalists for The Civilians' R&D Group, a respected new works program for musical theater.
Buddy Holly By the Sea
June 2025
I'll be rockin' and rollin' in Buddy Holly as Vi Petty, playing the piano, trumpet, and guitar at Cape Playhouse this summer!
Heartbreak Hotel
January 2025 - February 2025
Come see me play that doot-doot machine (trumpet) in Heartbreak Hotel at the John W. Engeman Theatre!

about Me
Hey there! I’m Katie Horner, I’m a bisexual, Philadelphia-grown, NYC-based actor, singer, playwright, composer, music director, and instrumentalist. I have a B.A. in Theatre from Temple University, summa cum laude.
As an actor, I’ve performed regionally at houses like Paper Mill Playhouse, Cape Playhouse, North Shore Music Theatre, Florida Studio Theatre, and the Fireside Theatre; I’ve also toured nationally with Buddy- The Buddy Holly Story.
I am currently a seasonal Music Director with RWS Global, providing world-class performances for cruise ships. I’ve music directed for companies like Theatre Horizon, 1812 Productions, Lantern Theatre Company, and the Philadelphia Fringe. I also have experience teaching and coaching through Arden Theatre Company and The University of the Arts.
My compositions have been performed and commissioned by Theatre Horizon, Temple University Singers, and other Philadelphia organizations. I am a composer with the BMI Lehman Engel Musical Theatre Workshop. My musical theatre material is available at dahabandhorner.com and my singer-songwriter material can be streamed anywhere under the name Kay Rose.
Gallery
PERFORMANCE MediA & Resume
download my resume
Performance Videos
Katie Horner sings ‘The Son of a Preacher Man’


Katie Horner sings ‘The Son of a Preacher Man’

Katie Horner sings "Reasons Why"

Katie Horner - Many a New Day
COMPOSITION & ARRANGEMENT
Listen to Practical Magic the Unofficial Musical!
Listen to more of my compositions here:
Composition Channel
A Little Odd by Katie Horner and Emily Boyd Dahab


A Little Odd by Katie Horner and Emily Boyd Dahab

Brighter Day by Katie Horner - Presented by Theatre Horizon

Loved So Deep: A Virtual Choir Pride 2020 Celebration
MUSICAL THEATRE DEMOS
The Half of It - I Just Can't Say It
Book by Colm Summers, Music/Arrangement by Katie Horner, Lyrics by Emily Boyd Dahab
Adapted from the 2020 high-school Rom-Com “The Half of It” based on Cyrano de Bergerac. Ellie, a brilliant closeted lesbian, has been wooing brainy but popular “it-girl”, Aster via text message on behalf of awkward jock, Paul. Tonight, Paul and Aster meet in-person at a diner for their second date while Ellie watches from the sidelines.
Cardinal Song - Big Bertha and Me
Book, Music, Lyrics & Arrangement by Katie Horner
Faye, a woman in her 80’s who is in the early stages of dementia, introduces Big Bertha, her elliptical, to Joyce, her new home aid.



