San Francisco rock promoter who helped organized the 1967 Summer of Love.
He spent his early life in Missouri and Texas organizing civil rights fundraising events.
He organized the Human Be-ins' at the city's Golden Gate Park and developed psychedelic light displays at the Fillmore as well as helped to shape what became the San Francisco Sound.
He was born in Santa Maria, California as the eldest of three sons of Novella and Chester Helms, who both died when Chet was nine.
He brought Janis Joplin to San Francisco for what would be her breakout performance, in 1966, at the Avalon.