Wait are you saying that with the example your provided your password for Lemmy would be catlemmy-Dog5? Because that’s a terrible system.

In Firefox there’s an option to copy links without site tracking. Kinda wish it was the default behaviour.

Song.link is the simplest I know of and seems to work pretty well. Just go to song.link/YOUR_TRACK_URL. For example

https://song.link/https://music.apple.com/album/never-gonna-give-you-up-2022-remaster/1624945511?i=1624945512

will take you to this page https://song.link/i/1624945512 with links to Spotify, Apple Music, Tidal, YouTube and what not.

Bonus tip: if you’re on macOS and use Velja there’s an option to automatically convert all copied music links to songlink.

Reeder, my favorite RSS reader, seems to be compatible according to this.