Isabella Guilar

Biography

Isabella is a London based Musical Director with a passion for new writing and collaborative theatre. She graduated from an MA in Musical Direction at Mountview Academy of Theatre Arts in 2025. Her skills range from arranging, transcription and score preparation to flexible musicianship across piano, bassoon, and accordion.

She is additionally a composer, with her works performed groups such as the Lontano Ensemble, and was one of the winners of a graphic score competition hosted by the London Sinfonietta.

Selected credits include:

Snow White | Marlowe Theatre | Keys 1/Rehearsal Pianist
Seussical | LCM | Musical Director
Next Generation Stars | Phoenix Arts Club | Musical Director
A Lesbian Love Story: The Musical | Singapore Fringe | Arranger
Guts & Glitter | The Clapham Grand | Musical Director
Remember, Remember! | Golden Goose Theatre/Old Red Lion | Musical Director
A Lesbian Love Story: The Musical | Seven Dials Playhouse | Musical Director
Of Earth And Quill (Tête à Tête Opera Festival) | Cockpit Theatre | Pianist/Arranger
West End Introducing: In Concert | Lyric Theatre | Assistant MD
Cleo Demetriou & Friends | The Other Palace | Musical Director
West End Live Lounge | Hoxton Hall | Copyist/Transcriber

Credits whilst training include:
Sweet Charity | Backstage Theatre, Mountview | Assistant MD
Machinal | Backstage Theatre, Mountview | Assistant MD
Charlie and the Chocolate Factory | The Mack, Mountview | Music Assistant
Into The Woods | The Mack, Mountview | Reed 2/Bassoon

Isabella has also assisted on a show with NYMT and was Musical Director for multiple shows during her undergrad, including Legally Blonde, Footloose, Little Shop of Horrors, and 35MM: A Musical Exhibition.

Education: BMus Music (King’s College London), MA Musical Direction (Mountview)