 In what has been described as a "flirtation" with "musique concrète", the song climaxes in an apocalyptic explosion - the supposed sound of an atom bomb - before a peaceful conclusion, in a blues form, which then fades out.Although many listeners thought that the explosion at the end of the song was a reverb unit being kicked or dropped, it was (according to the engineer Bruce Botnick in "Forever Changes" book, page 118), in actuality, taken from a sound effects record.He speculated that it was a recording of a gunshot slowed down.