Rebecca Warren is an Irish répétiteur and collaborative pianist working with singers, opera companies and festivals across Ireland and the UK. She has worked regularly as a répétiteur with Buxton International Festival since 2023, and with Wexford Festival Opera, where she was a Young Artist Programme répétiteur in 2022–23 and has since worked professionally.

She has been Musical Director for several productions from the piano and is experienced in choral conducting. In 2026 she returns to Buxton International Festival as répétiteur and Chorus Master for Lehár’s The Merry Widow. She also works closely with singers on individual coaching, recital repertoire, and performance preparation, offering guidance in French, Italian, German, and English-language repertoire. She will be Artist-in-Residence at the Centre Culturel Irlandais in Paris in Spring 2026.