Here.

Thanks to a reader for the link.

The site allows you to play well-known pop songs and break those songs down into their component parts as would a sound engineer (vocals, drums, bass, guitar etc) for mixing purposes.  Isolate each part, add or remove, at your leisure throughout the recorded song.

I fiddled with Dire Straits ‘Sultans Of Swing’ for a good half-hour or so.   There may be a favorite of yours on the list.