I'm Listening to The Band (1/14/74, Boston Garden, MA)

right now at link. This site is really cool. Registering is easy and free. There are hundreds of concerts to choose from:

"Bill Graham and his concert promotion company, Bill Graham Presents, produced more than 35,000 concerts all over the world. His first venue, the legendary Fillmore Auditorium, was home to many of rock's greatest performers - Jimi Hendrix, Janis Joplin, The Doors, The Grateful Dead, Jefferson Airplane, Otis Redding, Marvin Gaye, Led Zeppelin, Eric Clapton, Bob Dylan, Prince - and the list goes on and on.G raham taped thousands of live performances and stored the tapes in the basement of the BGP headquarters. These tapes and the concerts they captured lay dormant until the Bill Graham archive was acquired by Wolfgang's Vault (Bill Graham's given first name was Wolfgang) in 2003."