Bob Welch, the guitarist and songwriter who joined Fleetwood Mac in 1971, is remembered as one of the band's most overlooked contributors despite shaping a significant era of their sound before the arrival of Stevie Nicks and Lindsey Buckingham. Mick Fleetwood himself praised Welch after his death, saying his songwriting legacy "will survive all of us" and noting that a large stretch of the band's musical history was "completely ensconced in Bob's work." His relative obscurity stems largely from timing, as he departed before the band's biggest commercial success, leaving many casual fans unaware he was ever a member.

Born into a show-business family in California, Welch took up guitar in childhood before drifting through Paris and short-lived bands such as The Seven Souls and Head West. He joined Fleetwood Mac in 1971 to replace outgoing member Jeremy Spencer, impressing the band so much with his audition tape that he was hired without ever playing with them live. During his three years in the group, he wrote enduring tracks including "Future Games," "Sentimental Lady," "Hypnotized" and "Night Watch," before leaving in 1974 amid lineup pressures and going on to a successful solo career. Welch died by suicide in 2012 near Nashville, Tennessee.