HAPPIER THAN EVER: A LOVE LETTER TO LOS ANGELES is a filmed concert of a new album performed by singer Billie Eilish and edited together with animated sequences. In the animation, a version of Eilish drives around Los Angeles. The concert, filmed without a live audience at the Hollywood Bowl, features Eilish, her brother-producer Finneas, an occasional drummer, and guest accompaniment by the LA Philharmonic, conducted by Gustavo Dudamel, Brazilian guitarist Romero Lubambo, and the Los Angeles Children's Chorus, which Eilish says she grew up in.