The Avalon Ballroom was a music venue in the Polk Gulch neighborhood of San Francisco, California, at 1244 Sutter Street. The space is known as the location of many concerts of the counterculture movement, from around 1966 to 1969. It also had a reopening 34 years later, from 2003 to 2005.

Janis Lyn Joplin was an American singer and songwriter. One of the most successful and widely known rock performers of her era, she was noted for her powerful mezzo-soprano vocals, as well as her "electric" stage presence.