Biggest Concert Of All Time

Once upon a time, huge rock festivals in California where more than a once or twice a year event.

Every month or so, some fly by night promoter would throw a dozen bands together for a weekend of bad vibes and worse sound systems.

Then California Jam happened.

Top acts, state of the art sound and enough bathrooms to keep everyone happy (at least that's what they promised).

"Cal Jam" as it would be called, became the concert to end all concerts.

At least until "Cal Jam 2" a few years later.

Then the "US Festival' and "Live Aid" a few years after that.

But that's another story.