The latest version of Mixed In Key was announced today.

For those who are new to Mixed In Key, it’s a software tool that detects the key, pitch and harmonic information in a track – allowing DJs to catalog their tracks musically, rather than simple BPM info.

Celebrity users of Mixed In Key include Pete Tong, Dubfire, Kaskade and BT.

In addition to the new features (covered after the jump), version 4 comes in two flavors: Original and a XONE-specific version for Allen & Heath customers.

New features include:

- Improved algorithm to find the key of every track
- A fast way to create playlists in “Browse Collection” to organize music files
- New quality-control feature: While scanning music files, Mixed In Key detects if the volume is too loud, the song is off-key or there are too many clipped peaks. Version 4.0 suggests how to improve those audio files to make them sound better for a live DJ performance
- Ability to add custom keywords to each track for quick searching