Riffmaster Pro 3.0.25
To instantly slow down your favourite music without changing the pitch.
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It help musicians the easiest possible method for creating rhythm guitar parts.
HappyEO is a virtual instrument with your computer keyboard and mouse.
It is a MIDI sequencing program for Mac and Windows.
MusicMakerPro Polyphonic Synthesizer
The Midifile-Optimizer lets you customize your midi files.