The Clash were clearly quite nervous about recording the song, as it was a massive step into the unknown for them - unlike with "Police and Thieves
," this was a heavily reggae-influenced track both written AND recorded by a white rock group.
"We were a big fat riff group, like rock solid beats," noted Joe Strummer. "We weren't supposed to do something like that."
The gamble worked - it became one of their most popular songs, and remained until his death Strummer's favorite song that he'd ever written - one he'd even have played at his funeral.