BETHEL — Jimi Hendrix’s dive-bombing guitar runs on “The Star-Spangled Banner.” Rain chants. Joe Cocker’s chicken strut. The love, mud and three days of music.

The Woodstock experience is a museum piece now.

The Museum at Bethel Woods opens Monday on the site of the old dairy farm northwest of New York City that was trampled under by some 400,000 people on the wet weekend of Aug. 15-17, 1969. Part of a $100 million music and arts center, it tells the story of Woodstock.

Mocked recently by conservatives as a “hippie museum,” the exhibits actually give a thorough look at the generation-defining concert and the noisy decade that led up to it.

“It’s sort of a three-act play,” said Michael Egan, who is in charge of developing the museum for the not-for-profit Gerry Foundation. “We tell you the story of the ’60s, the story of Woodstock and the story of the legacy of Woodstock.”

Max Yasgur’s farm was chosen for the Woodstock concert after efforts to hold the show in the artsy town of the same name fell through. Stars such as Hendrix, the Grateful Dead and the Who provided the music, but it was the army of young baby boomers — many of them gatecrashers — whose bliss amid the chaos made Woodstock a watershed event of the 1960s.

The museum casts the concert as the culmination of many ’60s cultural trends, and visitors are led on a walk through the decade, figuratively. First up are exhibits featuring the likes of Dr. Spock and John F. Kennedy. Around a few turns, the museum psychedelicizes bit-by-bit with go-go boots and love beads before Woodstock takes center stage.

Displays include a run of the chain link fence placed around the concert site in a futile bid to keep out freeloaders and a plaque telling the story of Leni Binder, a local woman who made peanut butter sandwiches for the concert kids.