Ian Tanner is a singer/songwriter and multi-instrumentalist who has performed in rock bands since the mid-1980s. He was a founding member of Christian rock group The Awakening (1985–89), and later went on to form the band One Hundred Days with his fellow Awakening member, Andrew Horrocks. One Hundred Days performed from 1990 until 2000 when Tanner left the band and the group disbanded.