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 Keyzone by Bitsonic is a Virtual Instrument Audio Plugin. It functions as a VST Plugin.
Product Keyzone
Developer Bitsonic
Price (MSRP) Free
Type / Tags
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
 1.5  Downloads Released
System Requirements
Intel Pentium Celeron 1800 1024 MB RAM. Microsoft XP/Vista/Windows 7/8 32-bit VST 2.4
Audio Demos
Miscellaneous Information
Copy ProtectionNone

Keyzone is a free layered sample based piano and accordion VST instrument plug-in.


  • Grand piano wet.
  • Grand piano dry.
  • Sad pad.
  • Pitched grand 1.
  • Pitched grand 2.
  • Grand small.
  • Grand medium.
  • Rhodes piano1.
  • Rhodes piano 2.
  • Accordion.
  • Hammond B3.
  • My good angel.


  • Reverb.
  • ADSR.
  • Vibrato.
  • Detuner.
  • Octave.
  • Semitone.
  • Velocity curve.
  • Filter of velocity.
Latest User Reviews Average user rating of 0.00 from 0 reviews
Discussion: Active


29 April 2015 at 6:31pmslurpy

I downloaded and installed version 1.4, but the results were not so good: The standalone does not react to MIDI on any channel. The VST, under VST Host, reacts to MIDI, but the sustain pedal still has problems - you do get sustain when you press the pedal, but it remains on after you let go.

I posted this info in Bitsonic's Facebook page, asking for help, but I got no reply to any of my four attempts...
Would someone please help with this? Is there anyone else with similar problems?

Thanks in advance.


26 June 2016 at 9:00pmknossos

Hi slurpy, .

while I don't have those problems with ver. 1.5 (win32), there is still a sustain pedal problem. Keyzone seems to have a limit of polyphony, which means, after a number of keys pressed with sustain pedal on, it doesn't accept more notes. You have to release sustain then to continue playing. Very disappointing for me, because I like the Keyzone Piano sound very much.

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