The “Sonate en Trio” op. 46 was commissioned by Hannelore Müller, member of the Barock Trio of the Schola Cantorum Basiliensis and composed 1969. The first version for historical instruments was premiered November 3rd 1969 at Town Hall in New York, with August Wenzinger, Hannelore Müller (viole di gamba) and Robert Conant, cembalo. Subsequent performances followed in Chicago, Washington and Boston.

I believed it would be prudent to offer a second version for viola, cello and piano. The writin...