Edinburgh | Producer

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.

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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 will premiere at Underbelly Bristo Square, Dairy Room 5-30 August as part of the 2026 Edinburgh Fringe Festival. This follows a sold out preview performance at The Glitch as part of Highlight Festival by VAULT Creative Arts on Monday 27 July.

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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

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Supported by the Stage One Bursary Scheme for New Producers.