The Merry Macs were an American close-harmony pop music quartet active from the 1920s till the 1960s and best known for the hits “Mairzy Doats,” “Praise the Lord and Pass the Ammunition” and "Sentimental Journey." They also sang on recordings with Bing Crosby. 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).

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