
New records/tracks can be added to any record player, overriding the previous track in the mix. This adds that instrument's track to the current mix across all four records, automatically adjusting the mix's tempo and musical key. At any time, the player can place a record, then select a specific track from that record, and then place it on any of the record players.

Each record has four tracks keyed by color and related to a type of musical instrument such as drums, guitar or vocals. They have a virtual DJ table with four record players, custom instruments, sound filters, and up to 24 records (their crate) along the top of the screen. In Fuser, the player takes the role of a DJ at a large concert and make a mashup of different songs.
