...It was interesting to hear a less gushy and overblown interpretation of Rachmaninov's G minor trio than one normally encounters. Keeping composure is very important in this work, whose impact is dependent on retention and intensification effects. Yet the Delta Piano Trio managed to keep an iron grip on dynamics and tempo, without tangling up in rubatos. Gerard Spronk and Irene Enzlin were passionate, eluding wanton prettification. As for Vera Kooper, thoroughness and beauty of tone shone in equal measure throughout this 15 minute work. And this was just the opening number.
The Delta Piano Trio then gave a characterful, rhythmically buoyant account of Haydn's E minor Trio (HOB. XV:12). Though the instrument for which Haydn wrote his music differ in many respect from Conway Hall's lustrous Bösendorfer, Kooper managed to find the perfect key dip and lightness of touch, so that she did not overpower her partners. This went hand in hand with a playing style sharply contrasting with what we heard in Rachmaninov – none of the accursed chopping in which even distinguished pianist indulge; a neat and tinkling tone instead, along with insightful phrasing. Lowered dampers allowed her to achieve subtle effects without diminishing the clarity of the right hand, which was always perfectly steady. After a courteous Andante, the Rondo offered us an opportunity to admire both the Trio's technical skill and their flair for choosing a dramatised interpretation that avoided monotony."