the origins of "let's go to bed" lie in "temptation", one of the demos for "pornography". the song is a relatively upbeat, guitar-driven instrumental. in august 1982, soon after simon gallup's departure from the band, smith demoed a vocal version of the track, entitled "temptation two", a psychedelic piece not far removed from the "pornography" album but somewhat lighter in tone. at the end of the song, smith sings a string of wordless syllables, nearly identical to the "doo doo doo"s of the later song. the song version was debuted on kid jensen's radio show on 27 november 1982, as a take which was very close to the final version that appeared as a single in the same month.