A cue sheet is a list of music and audio tracks used in the production of a video maintained for the purposes of obtaining proper usage rights.
Cue sheets are the primary means by which performing rights organizations track the use of music in films and TV. Without cue sheets, it would be nearly impossible for such composers and publishers to be compensated for their work.
An accurately filled out cue sheet is a log of all the music used in production. This information includes: