Robert Hall Weir is an American musician and songwriter best known as a founding member of the Grateful Dead. After the group disbanded in 1995, Weir performed with The Other Ones, later known as The Dead, together with other former members of the Grateful Dead. Weir also founded and played in several other bands during and after his career with the Grateful Dead, including Kingfish, the Bob Weir Band, Bobby and the Midnites, Scaring the Children, RatDog, and Furthur, which he co-led with former Grateful Dead bassist Phil Lesh. In 2015, Weir, along with former Grateful Dead members Mickey Hart and Bill Kreutzmann, joined with Grammy-winning singer/guitarist John Mayer, bassist Oteil Burbridge, and keyboardist Jeff Chimenti to form the band Dead & Company. Dead & Company's last performance occurred on 16 July 2023 at Oracle Park in San Francisco.

Bobby and the Midnites was a rock group led by Bob Weir of the Grateful Dead. The band was Weir's main side project during the first half of the 1980s. They released two albums, but were better known for their live concerts than for their work in the recording studio. With a rhythm section that included jazz veterans Billy Cobham and, for a time, Alphonso Johnson, Bobby and the Midnites played rock music that was influenced by jazz-rock fusion.