From May 1974 to April 1975
Cozy Powell (drm); Don Airey (kbr); Bernie Marsden (gtr); Frank Aiello (vcl); Clive Chaman (bss).
Hammer released at least three singles, but Airey plays only on two of those.
Albums & singles
Man In Black [single] : 1974
Na Na Na [single] : 1974