SOTD - Night Flight by Led Zeppelin

This song is for one of the greatest friends you could ever ask for. Happy Birthday, Will! --Nick

Wikipedia:
"Night Flight" is a song by English rock band Led Zeppelin from their 1975 album Physical Graffiti. Originally recorded at Headley Grange in 1971, it was intended for Led Zeppelin IV but was held over and placed on Physical Graffiti to fill up the double album.

It was written largely by bassist John Paul Jones, who is listed first on the writing credits. Guitarist Jimmy Page played his guitar through a Leslie speaker for this track. A somewhat lyrically ambiguous song, singer Robert Plant recounts the tale of a young man attempting to evade the military draft. A different version was also recorded which included extra backing vocals.

The song was never performed live at Led Zeppelin concerts. However, bootleg recordings exist of the band performing the song during a soundcheck at the Chicago Stadium on 6 July 1973, which took place during Led Zeppelin's 1973 North American tour.