Track compatibility refers to the ability of different audio tracks or music files to work together seamlessly in a digital audio workstation (DAW) or during live performances. This includes matching elements like tempo, key, and format, ensuring that tracks can be mixed or layered without issues. When DJs or producers select tracks, they often consider their BPM (beats per minute) and musical key to create a harmonious blend. Tools like key detection software and tempo analysis help identify compatible tracks, making it easier to create a cohesive sound in a mix or production.