Live on Set is a behind-the-scenes look at the live musical performances in A Complete Unknown. Featuring director James Mangold, Timothée Chalamet, and cast members including Elle Fanning, Edward Norton, Monica Barbaro, and Boyd Holbrook, the piece explores the emotional and technical demands of recreating 1960s performances in real time. With no playback and all period-accurate instruments and microphones, the film’s music was performed completely live on set, a rare feat in modern filmmaking. This short film captures the artistry, intensity, and authenticity behind that creative decision.