I'm Going Slightly Mad is co-written by all four members of Queen and is one of their most eccentric tracks in years, according to the group's press release Brian May has always wanted to dress up as a penguin mirroring the behaviour of the real penquins in the film. Apparently progress was slow during filming as Cleo the hand-reared penquin from the Falkland islands had to lie down in a darkened room every other hour.