Interstella 5555: The 5tory of the 5ecret 5tar 5ystem (2003)

In "Interstella 5555: The 5tory of the 5ecret 5tar 5ystem," four gifted alien musicians are abducted by a record producer who transforms them into humans. Shep, a space pilot infatuated with the bassist Stella, embarks on a mission to rescue them on Earth. The group, now known as The Crescendolls, experiences rapid fame through bland corporate pop, stripped of their true identities. During a concert, Shep successfully liberates the trio but fails to rescue Stella. Determined, the band sets off on a journey to reclaim their identities and save her from captivity.