Listen to I Got a Theory online. I Got a Theory is an English language song and is sung by Laura Osnes, Corey Cott, James Nathan Hopkins, Brandon J. Ellis, Alex Bender, Geoff Packard, Joe Carroll and Bandstand Ensemble. I Got a Theory, from the album Bandstand (Original Broadway Cast Recording), was released in the year 2017. The duration of the song is 5:00. Download English songs online from JioSaavn.