High Quality Content by WIKIPEDIA articles! Mantra-Rock Dance was a musical countercultural event held on January 29, 1967, at the Avalon Ballroom in San Francisco. It was organized by followers of the International Society for Krishna Consciousness (ISKCON) as an opportunity for its founder, A. C. Bhaktivedanta Swami Prabhupada, to address a wider public, and as a promotional and fundraising effort for their first center on the West Coast of the United States.