From the start, we were expecting an evening of contrasts on Sunday when the Jade String Quartet played Mozart against an impressive line-up of percussion instruments along the back of the stage.
Mozart's final string quartet was delivered with the group's customary gusto; cellist David Garner made the most of his showy part, written for the cello-playing monarch who had commissioned the work.
Later movements were tarnished with passing intonation problems, but the opening Allegro had an irresistible dash and verve. Shading was spot on, Mozart's playful dynamics were relished and, mid-movement, we had some classy musical sparring.
Janacek's Mladi is an appealing woodwind sextet, in which the 70-year-old composer evokes fond memories of younger days. It is a life-affirming work, and a circle of six expert players entranced us with the effervescent energy of its opening pages.
Andrew Uren introduced a more reflective mood in the Andante with his melancholy bass clarinet while the jovial third movement, somewhere between a polka and a march, combined high spirits and brisk ensemble.