Bio from Wikipedia:
The Doobie Brothers are an American rock band from San Jose, California. Active for five decades, with their greatest success in the 1970s, the group’s current lineup consists of founding members Tom Johnston (guitars, vocals) and Patrick Simmons (guitars, vocals), veteran member Michael McDonald (keyboards, vocals), longtime member John McFee (guitars, pedal steel, violin, backing vocals), and touring musicians including John Cowan (bass, vocals), Bill Payne (keyboards), Marc Russo (saxophones), Ed Toth (drums), and Marc Quiñones (percussion).
The band’s history can be roughly divided into three eras. From 1970 to 1975 it featured lead vocalist Johnston and a mainstream rock and roll sound with elements of folk, country and R&B. Johnston left the group in 1977 due to health reasons, and was replaced by Michael McDonald, whose interest in soul music changed the band’s sound until it broke up in 1982 with Simmons being the only constant member having appeared on all of their albums. In 1987, the Doobie Brothers reformed with Johnston back in the fold; McDonald, who had previously made several guest appearances since their reformation, returned to the band full-time in 2019 for their upcoming 50th anniversary tour. Every incarnation of the group has emphasized vocal harmonies. The Doobie Brothers were inducted into the Vocal Group Hall of Fame in 2004, and will be inducted into the Rock and Roll Hall of Fame on November 7, 2020. The group has sold more than 40 million albums worldwide. Founding members John Hartman and Dave Shogren, Tiran Porter, Michael Hossack, Keith Knudsen and Jeff “Skunk” Baxter are former members of the band.