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 HoRNet SongKey MK3 by HoRNet is a Virtual Effect Audio Plugin. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin and an RTAS Plugin.
HoRNet SongKey MK3
Product HoRNet SongKey MK3
Developer HoRNet
Price (MSRP)
Type / Tags Key DetectorTempo Finder
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
Downloads Released
System Requirements
Vista and later
Downloads Released
System Requirements
macOS 10.7 and later
Miscellaneous Information
Copy ProtectionNone

HoRNet SongKey MK3 is the all new third version of HoRNet's key recognition tool, but it doesn't do simple key recognition, it's also capable of detect the chord being played and the song tempo. It also has MIDI input (to be able to detect chords and key of MIDI tracks) and MIDI output for the recognised chords so you can record them and edit the track for your own needs.


  • Artificial Intelligence driven key identification that follow key changes.
  • Realtime audio and MIDI chord detection.
  • Confidence display for each found key.
  • Key and Chord chromagram that shows each note level.
  • Realtime tempo detection.
  • MIDI output of detected chords.
  • Sharp and Flat notation.
  • Resizable vector GUI.
  • Mac OS X (>=10.7) and Windows support.
  • 64-bit compatibility both on Mac and Windows.
  • Audio Units VST2.4, VST3 and AAX format.
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