Fleetwoods - Mr Blue (1959) (1974) “Mr. Blue” is a popular song written by DeWayne Blackwell that was a hit for the Fleetwoods, reaching number one on the Billboard Hot 100 in November 1959, giving the group its second chart-topping hit of the year. Roy Lanham played guitar on the track, and Si Zentner played the trombone. The Fleetwoods were an American vocal group from Olympia, Washington, whose members were Gary Troxel (born November 28, 1939), Gretchen Christopher (born February 29, 1940), a