The “Three Festivals” were a trio of rock festivals that showcased the counter-culture movement and brought it to the mainstream: The Monterey Pop Festival, Woodstock, and Altamont Festival. Jefferson Airplane has the distinction of being the only band to play at all three of the shows.
These three festival shows are iconic for many reasons. The Monterey Pop Festival and Woodstock opened the doors for the hippie movement and showed the rest of the country and the world that they could not continue to ignore the youth. Altamont, on the other hand, has been co-opted by authorities as being indicative of the chaos that comes with change.
Rolling Stone interviewed Grace about what it was like to be at the center of so many cultural events—especially the Altamont festival, which used the Hell’s Angels as a security staff (with predictable results). You can read more all about it in the June issue, which hit the shelves mid-May.
You can read some of that interview on RollingStone.com