It's appropriate that our longest episode to date is a discussion about the 17+ minute, "Sister Ray," the longest song in the Velvet Underground's catalog (and it's also their heaviest). The improvised cacophony that the band created in 1968 would foretell everything from Sonic Youth to My Bloody Valentine. We excavate the details and the songs legacy after a long discussion about the announcement of Black Sabbath's final show in Birmingham this summer.