Lillie graduated from the Royal College of Music in 2016, studying composition with Haris Kittos and winning the Elgar Memorial prize for her final portfolio. Musical from a young age, her interest in composing grew out of learning instruments, a flair for languages, and a love of creative writing; narrative ideas and complex emotions are often a core element in her compositions.
Her pieces have been workshopped and performed by ensembles including the Ebor Singers, the Assembly Project, Florilgeium, and Ensemble Recherche, and she has participated in young composer schemes with Psappha, the RSNO, LPO, and LSO, who recently commissioned her to write new pieces for their ‘Elmer’s Walk’ Under-5s concert. In 2017 she was awarded the Tenso Young Composers Award for her song cycle setting poems by August Stramm, one of which was shortlisted for the London Oriana Choir five15 competition 2019, and her piece Dormientes Bestia for paetzold and tape was in the winning programme in the RCM Contemporary Competition 2016. In 2020 she will have a new commission premiered at the Cheltenham Music Festival through the Royal Philharmonic Society’s Emerging Composers programme.