Chuu is a Discord bot that integrates Last.fm with Discord. It also has some unique integrations with RateYourMusic.com. There are a ton of available commands like:
Your top of albums that were released in a given year
Image charts of both albums and artists
Play and scrobble music directly from Discord using Youtube,Bandcamp,Soundcloud,Twitch…
Artist, albums and songs leaderboards (crowns)
Unique artists within a server
Genre information about your artist/albums
200+ more commands!
Full support for slash commands