The trio featured Walter Verdehr on violin, Elsa Ludewig-Verdehr on clarinet, and Silvia Roederer on piano.
The Ludewig-Verdehrs were married in 1971 and founded the trio in 1972 at Michigan State University where it remained in residence.
They commissioned violin-clarinet double concertos from James Niblock, William Wallace, Dinos Constantinides, Paul Chihara, Ian Krouse and Richard Mills.
Series I includes composers Leslie Bassett, Alan Hovhaness, Karel Husa, Thea Musgrave (Pierrot), Ned Rorem, and Gunther Schuller.
[2] Elsa Ludewig-Verdehr is praised for her range of timbre and pitch, especially the clarinet's "chalumeau" or lowest register.