| Written by Robert Plant and John Paul Jones. The band had drifted apart, with Jimmy Page and John Bonham hanging out together and rarely showing up on time for recording sessions. As a result, many of the songs on this album were put together by Plant and Jones, with Page and Bonham adding their parts late at night. |
| This is probably a tribute to Plant's son, Karac, who died of a stomach infection in 1977 when he was 5. |
| Changes key on the last chorus. |
| Plant did the vocals in one take. |
| Jones played the synthesizer solo. |
