Classic rockers and Rock & Roll Hall of Fame nominees The Doobie Brothers will be joining their former bandmate, singer-songwriter Michael McDonald for a 50th anniversary tour next year. It will be their first tour together in nearly 25 years. Michael McDonald started off with the band in 1975 before going solo in 1982 and scoring a huge hit on his own with "I Keep Forgetting." As soon as we get more info on dates we'll let you know.