Founding members were: Yosef Yankelev and William Patterson, violins; Yuri Vasilaki, viola; and Ross Harbaugh, cello.
[3] As of 1983, members were: Curtis J. Macomber and William Patterson, violins; Robert Dan, viola; and Ross T. Harbaugh, cello.
[6][7] As of 1985, members were: Curtis Macomber and Vahn Armstrong, violins; Robert Dan, viola; and Ross Harbaugh, cello.
[8] Members on recordings in the late 1980s and early 1990s included Curtis Macomber and Vahn Armstrong, violins; Benjamin Simon, viola; and Ross Harbaugh, cello.
The quartet won the Walter W. Naumburg Foundation Chamber Music award in 1979.