Incompetech - Royalty Free and Creative Commons Music Archive
AIVA - The AI composing emotional soundtrack music
Premiumbeat - Premiumbeat.com provides high quality Royalty Free Music.
WaveBots Editor - Procedural music and sound maker that exports to Wav, MIDI, GoatTracker and much more.
ecrett music - Royalty free music composer, powered by AI
WolframTones - Listen to what I just found in the WolframTones music universe