Mixed In Key is award-winning DJ software that gives you the #1 technique of the world's best DJ's - harmonic mixing. 

What is Harmonic Mixing? It's mixing one track with the next without a key clash.  By mixing tracks of the same or related musical keys, you can create perfect mash-ups and live DJ sets. 

With Mixed In Key, you simply load up your MP3 and WAV files and the software scans the tracks, and extracts the key and BPM information.  It shows you a list of compatible tracks for flawless mixing.