In-A-Gadda-Da-Vida

Released in 1968, 'In-A-Gadda-Da-Vida' by Iron Butterfly is a seminal work in the psychedelic rock genre, known for its heavy use of distorted guitar riffs and extended instrumental sections. The title track, an epic 17-minute piece, became iconic and is often credited with popularizing the concept of the 'album track' in rock music.