Band-in-a-Box - Band-in-a-Box is so easy to use!
NtEd - Music Score Notation editor.
LeMMA - LeMMA is a simple GUI “front-end” written in Python for MMA (Musical MIDI Accompaniment – also written in Python). I wrote it so that I can easily churn out chord progressions. Ju…
music21 - Music21 is a Python-based toolkit for computer-aided musicology.
Microsoft Songsmith - Songsmith generates musical accompaniment to match a singer’s voice.
Sibelius - Sibelius is a virtual score creation tool which allows composers to easily create new piano scores, developed by Avid.