Classic Albums: Deep Purple – The Making of Machine Head  Classic Albums: Deep Purple – The Making of Machine Head is a DVD documentary about the making of the "Machine Head" album by Deep Purple. It is part of the Classic Albums series, released by Isis Productions/Eagle Rock Entertainment. The DVD does manage to unite the band under one single film, however this is only achieved via separate interviews at various locations. It also features interviews with the album's engineer Martin Birch and music journalists.