Voxengo r8brain PRO 1.5
r8brain PRO is a professional sample rate converter.
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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.