In the 40 years since its recording , `` Carnival of Light '' has acquired near mythical status among Beatles fans who argue that the existence of the track provides evidence of the group 's experimental ambitions beyond their commercially successfully pop career . Paul McCartney covered the ` ` lost '' Beatles track , ` ` Carnival of Light '' 1967 , long considered too experimental for mainstream audiences . Track has a mythical status among Beatles fans . Track features discordant sound effects , church organ , piano , shouting .
Paul McCartney covered the ` ` lost '' Beatles track , ` ` Carnival of Light '' 1967 , long considered too experimental for mainstream audiences . Track has a mythical status among Beatles fans . Track features discordant sound effects , church organ , piano , shouting .