Evolution: The Best of Iron Butterfly is the fifth and first greatest hits album released in 1971 by American rock band Iron Butterfly. Songs come from four of their albums: Heavy, In-A-Gadda-Da-Vida, Ball and Metamorphosis.

Track listing Side one "Iron Butterfly Theme" (Doug Ingle) – 4:34 "Possession" (Ingle) – 2:41 "Unconscious Power" (Ingle, Danny Weis, Ron Bushy) – 2:29 "Flowers and Beads" (Ingle) - 3:05 "Termination" (Erik Brann, Lee Dorman) - 2:50 "In-A-Gadda-Da-Vida" (45 RPM single edit) (Ingle) – 3:10

Side two "Soul Experience" (Ingle, Bushy, Brann, Dorman) – 2:50 "Stone Believer" (Ingle, Bushy, Dorman) – 5:20 "Belda-Beast" (Brann) – 5:46 "Easy Rider (Let the Wind Pay the Way)" (Ingle, Bushy, Dorman, Robert Woods Edmonson) – 3:06 "Slower Than Guns" (Ingle, Bushy, Dorman, Edmonson) – 3:37

Charts Chart (1972)PeakpositionAustralia (Kent Music Report)37

Band members Doug Ingle – lead vocals (except where indicated), organs Ron Bushy – drums Jerry Penrod – bass on side 1 tracks 1–3 Darryl DeLoach – tambourine and backing vocals on side 1 tracks 1–3 Danny Weis – guitars on side 1 tracks 1–3 Erik Brann – guitars on side 1 tracks 4–6 and side 2 tracks 1 and 3, lead vocals on "Termination" and "Belda-Beast" Lee Dorman – bass and backing vocals on side 1 tracks 4–6 and side 2 all tracks Mike Pinera – guitar on side 2 tracks 2, 4 and 5, additional lead vocal on "Stone Believer" Larry "Rhino" Reinhardt – guitar on side 2 tracks 2, 4 and 5

References