JD Souther could be the most famous A-list ’70s dude you don’t know. Yes, he co-penned glacial radio hits for The Eagles (“Heartache Tonight,” “New Kid in Town,” natch), The Seeg, Linda Ronstadt (dated and was a producer for her, too) and Bonnie Raitt, and there was his starring cameo in country-rock stoner supergroup Souther, […]