If you all have the Pluto TV app (and you should, especially if you've cut the cord), there is some music gold on there. Mostly mainstream but some good, old stuff. There is a "Live Music Replay" channel that shows old concerts 24/7. The second is "Vevo 70s" which has a strange mix of 70s 'videos' - everything from the Boss to Sly and the Family Stone.
If you are new to Pluto, it is an amazing mix of all kinds of programming that is worth a look.