Bob Weir, founding guitarist and vocalist of the Grateful Dead, has died peacefully at 78, surrounded by loved ones. Diagnosed with cancer in July, he successfully completed treatment but later passed away due to complications from underlying lung issues, marking the close of a six-decade journey that reshaped live music and fan culture.

The youngest member of the Grateful Dead, Weir joined the band as a teenager after meeting Jerry Garcia in the early 1960s. Together, they helped create a musical movement defined not by hit singles, but by improvisation, exploration, and a deep bond between band and audience.

Weir co-wrote many of the Dead’s most enduring songs, including “Sugar Magnolia” and “Truckin’,” and developed a distinctive rhythm guitar style that anchored the band’s free-form sound. Even after Garcia’s death, he carried the music forward through later projects, welcoming new generations into the ever-evolving catalog.

More than a musician, Weir believed music was a living force meant to keep moving. His legacy lives on in the community he helped build, the songs that continue to wander into new ears, and the idea that the music never truly ends—it simply keeps rolling on.