This song is not a love song in the traditional sense, rather a tribute to Robert Plant's son Karac, who died of a stomach infection in 1977 when he was 5. Zeppelin vocalist Robert Plant and bass player John Paul Jones wrote this. The band had drifted apart, with guitarist Jimmy Page and drummer John Bonham hanging out together and rarely showing up on time for recording sessions. As a result, many of the songs on In Through The Out Door were put together by Plant and Jones, with Page and Bonham adding their parts late at night. Read more on Last.fm.