| Year | Quartet | Chapter(s) | Tenor, Lead, Bari, Bass
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| 2010 | Main Street Station |
| Rob Thiel, Jason Seiberlich, Patrick Boehm, Steve Mendell
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| 2009 | Expedition | Greendale WI, Hilltop MN
|
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| 2008 | X-Factor | Rochester MN, Frank Thorne
|
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| 2007 | Vocality | Hilltop MN, LaCrosse WI
|
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| 2006 | Voices Only | Greendale WI, Fox River Valley WI
|
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| 2005 | After Midnight | Hilltop MN
|
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| 2004 | Quest | Frank Thorne, Hilltop MN, LaCrosse WI
|
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| 2003 | Nouveau | Greater St Paul MN, Hilltop MN
|
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| 2002 | Midnight Watchmen | Eau Claire, Lacrosse WI
|
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| 2001 | Bravo! | Hilltop MN
|
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| 2000 | Innovation | Hilltop MN, Rochester MN
|
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| 1999 | Trademark | Hilltop MN
|
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| 1998 | Breakpoint | Fargo MN, Moorhead ND
|
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| 1997 | Jackpot | Greendale WI
|
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| 1996 | Checkmate | Greendale WI
|
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| 1995 | State of the Art | Albert Lea MN
|
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| 1994 | Prime Time | Hilltop MN
|
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| 1993 | Excalibur | Hilltop MN
| John Moksnes, Greg Dolphin, Greg Volk, John Korby
|
| 1992 | The People's Choice | Fargo MN
|
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| 1991 | Family Ties | Rock Valley WI
|
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| 1990 | Simply Grand | LaCrosse WI
|
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| 1989 | Esprit de Corps | Greater St Paul MN
|
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| 1988 | Grandad's Bluff | Lacrosse WI
|
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| 1987 | Grandstand | Hilltop MN
|
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| 1986 | Northern Comfort | St Paul MN
|
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| 1985 | Harmony Works | Minneapolis MN
|
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| 1984 | Special Edition | Rochester MN
|
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| 1983 | Class Reunion | St Paul MN
|
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| 1982 | Downstate Express | Mankato, Rochester, Winona
|
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| 1981 | Little Rascals | St Paul, Minneapolis
|
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| 1980 | Friends | Elgin, South Cook, Lombard
|
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| 1979 | Ring of Gold | Mankato, Mennitonka
|
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| 1978 | Sound Gallery | Manitowoc, Plymouth, Greendale
|
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| 1977 | Mavericks | Racine, WI
|
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| 1976 | Talk of the Town | St Croix Valley, Minneapolis
|
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| 1975 | Harmony Galore Four | Minneapolis, Minnetonka
|
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| 1974 | Corporate Image | St Paul, Minneapolis
|
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| 1973 | Happiness Emporium | Minneapolis, St Paul
|
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| 1972 | Roadrunners | Minneapolis MN
|
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| 1971 | Red Barons | Minneapolis MN
|
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| 1970 | Skyliners | Racine WI
|
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| 1969 | Grin 'N' Tonics | Oshkosh, Appleton
|
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| 1968 | Dairyland Delegates | Racine, WI
|
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| 1967 | Gemini Crickets | Rochester MN
|
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| 1966 | Jubilaires | Bloomington MN
|
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| 1965 | Fanfares | Waukesha WI
|
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| 1964 | Count IV | Wauwatosa, Waukesha
|
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| 1963 | Fantastics | Madison, Wauwatosa, Menomonie Falls
|
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| 1962 | Badg-Aires | Madison WI
|
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| 1961 | Gate City Four | Fargo ND
|
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| 1960 | Four Clips | Green Bay WI
|
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| 1959 | Hi-Phonics | Milwaukee WI
|
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| 1958 | Hut Four | Minneapolis MN
|
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| 1957 | Lakeshore Four | Milwaukee WI
|
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| 1956 | Rhapsodies | Wisconsin Rapids WI
|
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| 1955 | Marqsmen | Milwaukee WI
|
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| 1954 | Black Hawks | Janesville WI
|
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| 1953 | Whipcords | Janesville WI
|
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| 1952 | Agriculturalists | Janesville WI
|
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| 1951 | Sing-Copates | Appleton WI
|
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| 1950 | Schmitt Brothers | Manitowoc WI
|
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| 1949 | Atomic Bums | Minneapolis MN
|
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| 1948 | Harmony Limited | Green Bay WI
|
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| 1947 | Cardinals | Madison WI
|
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| 1946 | Key Notes | Appleton WI
|
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| 1945 | Hi-Los | Milwaukee WI
|
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