For C trumpet, 2 violins, viola, and violoncello. Cover title. "The starting point for this work was the Trinitarian York plainchant, Ave colenda trinitas ... The plainchant always serves as the driving force behind the piece"--Program note. "Written on commission from the 2000 Williamson Glen Chamber Music Festival with funding from Loretta and Taylor Burke"--Program note. Program and performance notes precede score.