I never knew what Plant was saying at the 5:50 mark. Then I found someone had posted a video with lyrics. "Little Robert Anthony wants to come and play."
Zeppelin had a one-track mind when it came to song-writing, but it was a good track.
"Fooled Around and Fell in Love" is a song written and performed by blues guitarist Elvin Bishop with Mickey Thomas on lead vocals. It appeared on his 1975 album, Struttin' My Stuff, and was released as a single the following year.
Bishop does not sing lead vocals on the track. He felt that his gravelly voice would not do the song justice; he invited vocalist Mickey Thomas, who was a background singer in his band at the time, to sing it. It peaked at #3 on the Billboard Hot 100 singles chart in May 1976. The record was certified gold by the Recording Industry Association of America on June 23, 1976. In Canada, the song reached #22 on the singles chart and #8 on the Adult Contemporary chart. The single reached #3 in the New Zealand Singles Chart.
Based on his work with Bishop, Thomas was invited to become the lead singer for Jefferson Starship (who would later evolve into simply Starship).