Under the Influence
Edinburgh & London | Producer
Photo by Madeleine Penfold
Photo by Danny Kaan
Photo by Danny Kaan
Photo by Madeleine Penfold
After becoming a viral sensation, identical twins Carine and Frances land in couples therapy as the world’s most co-dependent non‑couple. The session erupts into a hilarious musical intervention and a reckoning that threatens to collapse their lifelong duet.
Best known as @thegilberttwins to their 3M+ followers online, Carine and Frances return to their musical theatre roots with their original score co-written by Shona Maule. Loud, ridiculous, and unexpectedly heartfelt, this new musical comedy explores the chaos of sisterhood, online pressure, and the search for your own voice.
Under the Influence is running at London's King's Head Theatre 08 - 26 September.
Created by The Gilbert Twins
Directed by Georgie Rankcom
Book & Lyrics by Carine Gilbert and Frances Gilbert
Lyrics, Composition, and Musical Direction by Shona Maul
Under the Influence premiered at Underbelly Bristo Square, Dairy Room as part of the 2026 Edinburgh Fringe Festival following a sold out preview performance at The Glitch as part of Highlight Festival by VAULT Creative Arts.
Supported by the Stage One Bursary Scheme for New Producers.
All That Dazzles
"Funny, heartfelt and packed with infectious tunes"
Musical Theatre Review
"Short and sweet, but lingers long after the curtain falls."
For the Plot Magazine
"Funny, ridiculous, incredibly catchy and then, somehow, properly moving as well"
The Scotsman
"A vibrant success fusing musical theatre with sketch comedy"
Theatre and Tonic
"60 minutes of hilarity and heartfelt moments."
