English music producer and engineer Martin Birch, who worked on iconic albums by Iron Maiden, Deep Purple, Whitesnake, and Black Sabbath has died aged 71, Ultimate Classic Rock reports. Birch began his industry career as an engineer, earning early credits on albums by Jeff Beck and Fleetwood Mac. He worked also with Wishbone Ash, and Rainbow, while he finished his career with the epic 'Fear of the Dark' by Iron Maiden.