In the last line , the " girl who won my heart " refers to Robert Plant 's daughter Carmen , ( born 21 November 1968 ) , who was three years old at the time of recording . In concert , Plant always updated the lyric to reflect her current age , as captured on the '' Led Zeppelin DVD '' which features a performance of the song at Madison Square Garden in 1973 . During this performance , Plant sang the third verse , which starts with " Sitting round singing songs 'til the night turns into day " as the second verse and sang the second verse at the end of the song . The band first played the song live on their 1972 U.S. concert tour and it remained as part of their performances until their 1973 U.S. tour . It was deleted from the set list thereafter
1972 U.S. concert tour
Led Zeppelin North American Tour 1972
The Ocean (Led Zeppelin song)