Tour(s) in which song is known to have been performed (main source: FZShows, v. 7.1):

• December, 1967-August, 1968 (MOI)
• August-October, 1978 (Europe & North America)

Comments:

FZ introducing the song in We Don't Mess Around (1978):

Ladies and gentlemen, we're gonna perform a number, this number hasn't been performed since actually 1968. This piece is 10 years old, and we're gonna give it its 10th Anniversary performance, right here at the Circus Krone. Now the last time this piece was performed was at the Fillmore East, by the old Mothers Of Invention, now the name of this piece is "Dead Air." (then he stares at the camera in silence for 20 seconds)