 Later, Ralph Burns Kellogg also joined the band on keyboards.Blue Cheer's style now changed to a more commercial hard rock sound à la Steppenwolf or Iron Butterfly.By the fourth album "Blue Cheer" Paul Whaley had left the band and had been replaced by Norman Mayell, and following the release of the fourth album Bruce Stephens also left the band and was succeeded by Gary Lee Yoder who helped complete the album.