International Champion Quartets |
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Frontier College Quartet Champions 2018 Motor City Metro |
Resisting-A-Rest Senior Quartet Champions 2010 Mt. Pleasant |
Power Play 2003 Hillsdale & Macomb County |
Gentleman's Agreement 1971 Detroit & Monroe |
Auto Towners 1966 Dearborn & Oakland County |
Harmony Halls 1944 Grand Rapids |
International Champion Choruses |
Great Lakes Chorus 1953 Grand Rapids |