It's mostly remixes of songs from the musical by various artists (Busta Rhymes, Sia, Alicia Keys, etc.) with some demo tracks that didn't make the final cut of the musical.
What does a mix tape in this context mean?
It's mostly remixes of songs from the musical by various artists (Busta Rhymes, Sia, Alicia Keys, etc.) with some demo tracks that didn't make the final cut of the musical.