Phil Lesh, a founding member of the Grateful Dead whose electric bass playing came to define the psychedelic San Francisco sound, died Oct. 25 at age 84.

The concerts, set for Friday, Sept. 12, and Saturday, Sept. 13, are part of the ongoing celebration of the Grateful Dead's ...

Phil Lesh, a founding member of the Grateful Dead whose electric bass playing came to define the psychedelic San Francisco sound, died Oct. 25 at age 84.

Phil Lesh, the bassist for the Grateful Dead who propelled many of its wildest musical explorations yet also composed and sang one of its loveliest songs, "Box of Rain," has died. He was 84.

Phil Lesh, the bass player who co-founded the legendary rock band Grateful Dead, died on Friday. He was 84. Lesh’s death was announced in a statement posted on his official Instagram account.

FILE - Phil Lesh performs with The Dead, at the Forum in the Inglewood section of Los Angeles, on May 9, 2009. Lesh, a founding member of the Grateful Dead, died Friday, Oct. 25, 2024, at age 84.

Phil Lesh, of The Grateful Dead, performs during a reunion concert in East Troy, Wis. on Aug. 3, 2002. Lesh, a founding member of the Grateful Dead, died Friday, Oct. 25, 2024, at age 84.

Phil Lesh of the Grateful Dead arrives for the 49th Annual Grammy Awards on Sunday, Feb. 11, 2007, in Los Angeles. Lesh, a founding member of the Grateful Dead, died Friday, Oct. 25, 2024, at age 84.

FILE – Phil Lesh, of The Grateful Dead, performs during a reunion concert in East Troy, Wis. on Aug. 3, 2002. Lesh, a founding member of the Grateful Dead, died Friday, Oct. 25, 2024, at age 84.

File photo: Phil Lesh, of The Grateful Dead, performs during a reunion concert in East Troy, Wis. on Aug. 3, 2002. Lesh, a founding member of the Grateful Dead, died Friday, Oct. 25, 2024, at age 84.

Phil Lesh, bassist and founding member of The Grateful Dead, died Friday, a producer who worked with him, Peter Shapiro, confirmed to CBS News. Lesh was 84 years old.