Listen to Mia & Sebastian's Theme (Late for the Date) (From "La La Land") online. Mia & Sebastian's Theme (Late for the Date) (From "La La Land") is an Unknown language song and is sung by Marco Brena. Mia & Sebastian's Theme (Late for the Date) (From "La La Land"), from the album Memory's Journey (Movies Soundtracks Piano Solo), was released in the year 2019. The duration of the song is 5:46. Download Unknown songs online from JioSaavn.