Wow... I didn't know how much Mellotron was on The Zombies (Rod Argent) LP ODESSEY AND ORACLE (1968). The album was recorded on 4 track in Studio 2 at Abbey Road right after the Beatles had completed Sgt. Pepper. It is mostly Mellotron, Piano and Organ! Try to find the track "hung up on a dream". <-fucking amazing mellotron !