Find the word definition

Wikipedia
O.S.T. (album)

O.S.T. is the third album by the People Under the Stairs. The album was again produced in Thes One's home entirely by the duo, and it was finally released in June 2002 on Om Records. The album produced three singles, including "Acid Raindrops", one of the group's most successful songs and a constant staple at live shows.