Only for owners of the PS3™ version. Add 'B.Y.O.B.' - System of a Down' by Only for owners of the PS3™ version. Add 'B.Y.O.B.' by System of a Down to your Rock Band™ 4 song library. Compatible with Rock Band™ 4 only. For music credits, visit www.rockband.com. to your Rock Band™ 4 song library. Compatible with Rock Band™ 4 only. For music credits, visit www.rockband.com.