You just cant beat Old School UK Punk Rock ....The Damned.."Machine Gun Ettiquette", The Clash..."give em enough rope" and Sex Pistols "never mind the Bollocks"...I love to play classic albums when im going thru my preps/bags and rotating tins etc ....thinking to myself once TSHTF I wont be able to hear these again also some classic Judas Priest "British Steel "....fast metal music for when im going thru my weapons ! class