On Air is a live album by American fingerstyle guitarist and composer John Fahey, recorded in 1978 and released posthumously in 2005.

The tracks from On Air come from a performance on Radio Bremen in Germany in 1978.

Allmusic critic Thom Jurek wrote "Fahey spins out a musical universe that straddles musical worlds, dips into them, and carries the detritus somewhere else to make something entirely new yet rooted in time immemorial.

"Dance Of The Inhabitants Of The Palace Of King Philip XIV Of Spain" The description of "Beverly" as a 'slide guitar piece' in the liner notes is also inaccurate.

This can be confirmed by listening to "Beverly" on 1973 album After the Ball, and "Dance of the Inhabitants of the Palace of King Philip XIV (of Spain)" on 1969 recording The Great Santa Barbara Oil Slick (also on 1964 album Death Chants, Breakdowns & Military Waltzes in shorter form).