El Toro Records is dedicated to putting out every last thing that Buddy Holly ever sang, said, played on, or produced during his brief musical career. Luckily there’s a lot of stuff, including demos and outtakes, radio and television appearances and interviews, and countless random session stops, starts, and rehearsals, so one needn’t ever wonder what Holly was up to as a professional musician, and thanks to El Toro, it’s all preserved in depth. This three-CD set collects rare and obscure recordings that featured Holly as a session player, singer, or producer with the likes of Waylon Jennings and Roy Orbison and others, audio from various radio and television appearances and interviews, as well as several cuts from various other Texas musicians that Holly crossed paths with on the tour circuit, “Buddy’s buddies,” if you will. It’s minutiae for serious Holly fans, which makes this box a must have if that’s you.