It emulates two track DJ mixer and dual cd players. Disco allows you to catalog all your music to it's database. MP3 files will be organized to albums and artists automatically using ID3 tags. For fast song lookup there is a search engine.Players have pitch controls, bend buttons and cue-points. Disco allows you to prelisten your songs using usb output device or it can split one output to left(master) and right(monitor). Disco also has an easy to use BPM counter, keyboard support, playlist editor and automated mixing mode.