There are five versions of this song on the market. The original LP version from Fool for the City lasts 8 minutes and 14 seconds. The single version, found in several compilations, was truncated to 3:56 with a fade-out ending. The 1977 live version is 8:21, the King Biscuit Flower Hour Foghat version is 10:37 and the 2007 live version is 9:44.
Nick had a cassette player and he would record whatever we played there. As I recall it, the whole song was written— the middle part and the bass part and the ending were all Nick's ideas. Basically, Nick wrote the song, but we just jammed on it, and Nick cut the stuff up so it made sense as far as the song goes. And then Dave [Peverett, the band's then guitarist and vocalist] said, 'I've got some words.' That's how that came about (laughs).