[10][11] "Sunshine Superman" reached the top of the Billboard Hot 100 in the United States (Donovan's only single to do so) and subsequently became the title track of his third album.

[13] It was arranged by two jazz musicians, pianist John Cameron and Spike Heatley, who played double bass.

John Paul Jones, who would also act as an arranger on some Donovan sessions for producer Mickie Most, played electric bass.

[15] Cash Box described the song as a "funky, medium-paced, blues-soaked romancer about a lad who is determined to snare the gal of his dreams", and called it "impressive".

[18] Sunshine Superman and his world were wiped out by the Crisis on Infinite Earths, only to be brought back by the Psycho-Pirate before fading away again.