Fredboat - FredBoat is one of the best online music bots for Discord.
Audio Hero - Over 250,000 royalty free music & sound effects for videos
BMO - BMO is a music Discord bot that offers a wide range of high-quality music, games, memes, and other entertainment.
TunePocket - Download 11,000+ royalty free music tracks and sound FX. Buy once, use forever. New music added daily. Save over 50% compared to most popular similar services. Incredible value!
Zandercraft - Zandercraft is an amazing discord bot that includes musical playback and a bunch of other cool features.
Free Music Archive - Interactive library of high-quality, legal audio downloads