Clip from P.A. Pennebaker and Criterion Films DVD "The Complete Monterey Pop Festival"
Sunday, June 18, 1967 - The Monterey Pop Festival The WHO conclude their set with "My Generation" - Wally's 5 seconds on film and a great moment in rock history.
When the Who did their amazing set that night, nobody knew about the smoke bomb inside Keith Moon's drum set, especially Wally Heider, who up until that time had placed his normal set of condensers and dynamics on stage as was the norm. At the very end of the song, Wally steps into history as he avoids running into a dancing Roger Daltry and dodges guitar-shrapnel from Keith Townsend's antics as he rushes to save his microphones from certain destruction. I'm sure he nor anyone else had seen anything like this before. I don't think any condensers appeared on stage at the festival after that.
From the liner notes of the Criterion DVD set:
"After about four minutes of the song, Daltrey began to swing his handheld mike over his head; Townshend smashed his guitar strings against the mike stand before him, building up the feedback. Then he ran and played the guitar directly into his amp. The feedback went wild, and then he lit a smoke bomb before the amp so it looked like it had blown up, and smoke billowed on the stage. He lifted his guitar from his neck and smashed it on the stage, again, again, again, and it broke, one piece sailing into the crowd. Moon went psychopath at the drums, kicking them through with his feet, knocking them down, trampling on the mikes. The noise continued from the guitar as everything fell and crashed in the smoke."
Site Contributor Dale Manquen's account of the event: