Formed to play proms in Minneapolis, Minnesota, the group originally consisted of the three McMichael brothers: tenors Judd (1906–1989) and Joe (1916–1944), and baritone Ted (1908–2001).
They were discovered by organist-bandleader Eddie Dunstedter of station WCCO, who suggested they perform in masks and dubbed them The Mystery Trio.
The McMichael brothers and Cook appeared as a specialty act in Hollywood movies, including 1940's Love Thy Neighbor, and Universal Pictures gave The Merry Macs their own feature-film series in 1941.
Their most famous film is Ride 'Em Cowboy (1942), an Abbott and Costello comedy in which The Merry Macs offer musical interludes.
[4][5] Youngest brother Joe McMichael served in the armed forces and died in 1944 following an accidental overdose of Sulfa tablets while ill.[6] He was replaced by Clive Erard, then Dick Baldwin, and finally Vern Rowe.
The Merry Macs continued in Britain making its base on the south coast Salisbury Wiltshire until 2000 when Harold Lambert, John Reg Peter and their female vocalist Lettice Mackenzie Campbell retired from the music entertainment industry.