AIVA - The AI composing emotional soundtrack music
Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
WolframTones - Listen to what I just found in the WolframTones music universe
Amper Music - Artificial intelligence music composer
WaveBots Editor - Procedural music and sound maker that exports to Wav, MIDI, GoatTracker and much more.
ikes - Capture & manage ideas in one place