At age twenty-one, Bulbrook stopped playing the violin. She felt uneasy about her decision to quit, worrying that she would disappoint her family after years of lessons and providing an expensive, professional-grade violin for her. She then worked in public relations. While working as an intern at the magazine Filter, she played backing violin for a Kanye West performance in Aspen, Colorado, which she described as a "revelation", as playing in that context was more casual and fun. Mikel Jollett, who was an editor at Filter, then invited her to tour with his band The Airborne Toxic Event.[1]
Bulbrook joined The Airborne Toxic Event in her early twenties, touring extensively after their hit "Sometime Around Midnight".[1]
In September 2019, Bulbrook announced that she was leaving the band.[3]
Bulbrook helped establish GIRLSCHOOL, a woman-led music festival that centers on women artists and leaders.[4]
Bulbrook has been a member or touring member of other bands including Edward Sharpe and the Magnetic Zeros.[5] She also created her own band, The Bulls, along with Marc Sallis of The Duke Spirit.[1]
Bulbrook has played violin for the scores of several films, including Moonlight.[2] She also was credited on several tracks from the Beyoncé album Lemonade: "Pray You Catch Me", "Don't Hurt Yourself", and "All Night".[6]