Mia & Sebastian’s Theme (from La La Land) (arr. Brent Edstrom) for written by Brent Edstrom. The format of this sheet music is Piano Duet and it’s published by Hal Leonard – Digital Sheet Music. Mia & Sebastian’s Theme (from La La Land) (arr. Brent Edstrom) is part of the following sheet music categories: Film/TV,Musical/Show.