"The Riddle," a two-movement piece written for Strata by Robert Maggio, was intriguing and created a mood that the concluding weighty and opulent set of four Max Bruch’s Eight Pieces, Op. 83, did not disturb. The material for Maggio’s trio is the American folk tune "The Riddle Song," whose melody is fragmented and scattered through a bunch of octaves in the energetic first movement and whose harmonic implications are explored quietly and intensely in the second. It is a nicely put-together piece and a fine contribution to the chamber repertoire.

[Duo Concertante] is a fairly conservative, attractive piece that begins and ends with bursts of rhythmic energy that surround an elegiac central movement. Mr. St. John and Mr. Koenig played the work with the balance of vitality and sentiment it seemed to require.

That dynamic, fierce piece [Duo Concertante] sent the bow flying and sent Koenig into waves of repeated notes, driving patterns and an occasional plucked string inside the piano. Its energy and insistence echoed some of Bartok's driving pieces, but its voice was distinctive and the two performers made it sound celebratory.

The first movement [of Duo Concertante] is energetic, the second songful and lovely, the last percussive. It was played with great affection.