LOS ANGELES — Phil Lesh, a highly skilled violinist and jazz trumpeter, made a significant impact on the music industry as a pioneering bassist for the Grateful Dead. He passed away on Friday at the age of 84.

The announcement of Lesh’s death was shared on his Instagram page. As the oldest remaining member of the iconic band that shaped the acid rock genre in the 1960s, his contributions were invaluable. The statement highlighted the love he received from family during his final moments, noting, “Phil Lesh, bassist and founding member of The Grateful Dead, passed peacefully this morning. He was surrounded by his family and full of love. Phil brought immense joy to everyone around him and leaves behind a legacy of music and love.”

While the statement did not specify the cause of death, Lesh had faced numerous health battles in the past, including prostate cancer, bladder cancer, and underwent a liver transplant due to complications from a hepatitis C infection and heavy drinking years ago.

Despite maintaining a low profile and rarely engaging with the media, Lesh was widely regarded by both fans and bandmates as an essential element of the Grateful Dead. His thunderous electric bass lines complemented lead guitarist Jerry Garcia’s illustrious solos and were fundamental to the band’s legendary extended jams. “When Phil’s happening the band’s happening,” Garcia had famously remarked.

Drummer Mickey Hart referred to Lesh as the intellectual backbone of the group, crediting him with applying a classical composer’s perspective and expertise to their rock ‘n’ roll sound. His innovative approach helped the band navigate and explore new musical territories.

Lesh leaves behind a rich legacy that not only defined a music era but also inspired countless musicians and fans around the world. His storied career and unique contributions to rock music will long be remembered.