Tickets for the three-day event went for $18 in advance and $24 at the gate.
Dat is nu wel wat anders bij meeste festivals

At the time, Shure was all about the phonograph cartridge market. Even today’s ubiquitous SM57 and SM58 microphones, introduced in 1965 and 1966 respectively as TV/radio studio microphones (SM), were failing to penetrate their target markets.

dat is 55/56 jaar.... en ik veronderstel dat ze niet erg veel zullen zijn veranderd al die jaren.