DTECH Open Contemp Chorus B DTECH Open Contemp Chorus B Search B22 1917 B22 1918 B22 1919 B22 1920 B22 1921 B22 1922 B22 1923 B22 1924 B22 1925 B22 1926 B22 1927 B22 1928 B22 1929 B22 1930 B22 1931 B22 1932 B22 1933 B22 1934 B22 1935 B22 1936 B22 1937 B22 1938 B22 1939 B22 1940 B22 1941 B22 1942 B22 1943 B22 1944 B22 1945 B22 1946 B22 1947 B22 1948 B22 1949 B22 1950 B22 1951 B22 1952 B22 1953 B22 1954 B22 1955 B22 1956 B22 1957 B22 1958 B22 1959 B22 1960 B22 1961 B22 1962 B22 1963 B22 1964 B22 1965 B22 1966 B22 1967 B22 1968 B22 1969 B22 1970 B22 1971 B22 1972 B22 1973 B22 1974 B22 1975 B22 1976 B22 1977 B22 1978 B22 1979 B22 1980 B22 1981 B22 1982 B22 1983 B22 1984 B22 1985 B22 1986 B22 1987 B22 1988 B22 1989 B22 1990 B22 1991 B22 1992 B22 1993 B22 1994 B22 1995 B22 1996 B22 1997 B22 1998 B22 1999 B22 2000 B22 2001 B22 2002 B22 2003 B22 2004