This year marks the 50th anniversary of the Monterey Pop Festival (June 16-18, 1967). That culture-changing weekend of music in central California might not be as famous as Woodstock, but it's every bit as historically important.
In the latest issue of Billboard, we spoke to Monterey organizers, performers and attendees about the hippie happening, which you can read here. But for a quick primer on why Monterey means so much, here are five ways it changed the music world forever.
