'Cause you're too loud, too loud

On this day in 1970, Led Zeppelin performed at the Sports Arena in San Diego. The acoustic set went over so poorly with this particular audience that they dropped one of the acoustic songs from the set list.

Robert Plant repeatedly tried to hush the audience to no avail while they tuned up, saying, "Shut up. ... You've all got acoustic guitars at home, and you know what it's like trying to play it with the television on."

When the San Diego Union ran a concert review written by music critic Donald Dierks, there was no mention at all of the attempt at playing any softer material. Instead, Dierks focused only on the loudness. He wrote:

"As for the music itself, the principal expressive attribute was volume
-- wave after ear-splitting wave of volume. ... Suffice it to say that the music
was so loud it made the seats shake until they felt like therapeutic vibrator
chairs -- literally."