Awash in controversy and loaded with revolutionary protest, Jefferson Airplane's Volunteers stands as the last album made by the group's classic lineup and brings insurgent closure to the peace-and-love era. The potent 1969 record confronts war, politics, greed, and environmental ruin in head-on fashion matched by few peers. Steeped in the belief people and music could transform the world, it steers the band in community-minded and county-rock directions, and features charged playing by guest luminaries such as Jerry Garcia, Stephen Stills, David Crosby, and Nicky Hopkins. Volunteers also benefits from being one of the first 16-track recordings. Stills and Crosby assist in rocking the boat on a turbulent cover of "Wooden Ships" lined with Grace Slick and Marty Balin's overlapping lead vocals. Hopkins gooses the call-to-arms title track with frisky boogie-woogie lines. Garcia lends "The Farm" a suitable rustic vibe, and on his final appearance with the Airplane, drummer Spencer Dryden helms the pastoral sing-a-long "A Song for All Seasons." Over 50 years later, Volunteers remains a cultural and musical touchstone.