A baker’s dozen must-haves for this year’s Record Store Day

The spring edition of Record Store Day is upon us once again, with more exclusive and limited edition releases than even the geekiest among us can get their heads around. So we've perused the list to come up with these 13 essential titles, from the likes of Cream, Slipknot, Tom Petty, Bruce Springsteen, Brian Wilson, Ma Rainey, this year's RSD ambassador Bruno Mars and more...