Singer, songwriter, and guitarist Bob Welch enjoyed a brief streak of mainstream success in the late '70s after a four-year, pre-phenomenon stint in Fleetwood Mac. In 1971, Welch replaced Jeremy Spencer and stayed for the albums Future Games (1971), Bare Trees (1972), Penguin (1973), Mystery to Me (1973), and Heroes Are Hard to Find (1974). Welch's finest Fleetwood Mac moment was the dreamily jazzy "Hypnotized" on Mystery to Me.