Short:        Symphonie Pro (incl. full Sourcecode)
Author:       Patrick Meng
Uploader:     patrick meng bluewin ch
Type:         mus/edit
Version:      3.3d
Architecture: m68k-amigaos

This is Freeware, no restrictions apply.

Fantastic Audio Composing Software
256 Physical Audiochannels, 16 Bit Software DSP, 16 Bit Samples

Source Code included