Growing up Billie was surrounded by the music of Nick Drake, John Martyn, Joni Mitchell, Joan Armatrading, Kate Bush and Loudon Wainwright III, amongst others. In 2016, aged just 17, she was nominated for the BBC Sound of 2016 and the same year released her critically acclaimed debut album, Writing of Blues and Yellows, an open-hearted collection of quietly beautiful songs. Her 2019 follow-up, Feeding Seahorses By Hand, was described  by The Line of Best Fit as a "gentle and reserved masterpiece". Towards the end of 2019, Billie signed to Fiction records, a division of Universal, and then went back into the studio and reunited with producer Rich Cooper. Billie felt empowered to experiment and rediscover herself.

Since then, she has toured frequently, returning home to record her fourth record Drop Cherries. Her writing explores social commentary, the struggle with modernity vs tradition, nature, mental health, relationships, and a general voyeurism on the world as she sees it.