“Who’s fighting and what for?” Nope, it’s not part of a call-and-response chant from a recent political rally. As and true Rolling Stones fanatic knows, it’s what Mick Jagger limply asked from the stage at Altamont as fatal violence erupted in the crowd during the infamously doomed festival — which just happened to take place 53 years ago today. Some say the deadly event marked the tragic, bitter end of the ’60s. I don’t know about that. I just know it’s the intro to today’s roundup of 103 singles, videos, cover tunes, remixes, golden oldies, holiday tunes and live clips — including the usual crop of goodies you won’t find anywhere else. Today’s Tinnitist-approved tracks are tagged with a 🎯. Don’t fight it: