This isn't exactly a concert, nor can Moonies meet there, and there's only a bit of prog, but there's now a streaming archive of Bill Graham Presents concerts from 1966-1999 Fillmore East/West, Winterland, etc. Some of the most seminal sounds for me growing up in the SF Bay Area.
http://tinyurl.com/7opql
The Allman Brothers, Big Brother, The Band, Chuck Berry, Booker T. & the MG's, Chambers Brothers, Chicago, Cold Blood, Elvis Costello, Cream, CCR, CSN&Y, King Curtis, Miles Davis, Delaney & Bonnie, The Doobie Brothers, Dylan & The Band, Everly Brothers, Aretha Franklin, The Grateful Dead, Great Society, Jimi Hendrix, Hot Tuna, Jefferson Airplane, Lighthouse, Elton John, Led Zeppelin, Lighthouse, Van Morrison, Pink Floyd, QMS, Santana, John Sebastian, Bruce Springsteen, The Staple Singers, Steppenwolf, Taj Mahal, James Taylor, Tower of Power, Muddy Waters, Stevie Wonder, Neil Young, Zappa & The Mothers