MIDI Input/Output: You can now route MIDI into SongKey to see what chords you are playing, or record the detected chords out to a MIDI track.
Stability: Users report fewer "flickering" key detections where the plugin jumps between two related keys.
Do you work mostly with or electronic samples ?
The most significant reason the MK4 is considered better than the MK3 is the revamped detection algorithm. It doesn't just guess the key; it follows the harmonic progression of a song in real-time.
When compared to the MK3, the MK4 feels like a professional upgrade rather than a minor patch.
To help you decide if this is the right tool for your setup, let me know: What do you currently use?
Speed: It analyzes the incoming signal with significantly lower latency.
