The New England String Ensemble’s Saturday concert had a simple, and effective, structure. In the middle were two 20th-century pieces, vastly different in their languages; bookending them were fugues by Mozart and Beethoven, works that came out of their composers’ late-in-life fascination with Baroque counterpoint. The intertwining of tradition and modernity made for a program that hung together exceptionally well.
Mozart’s Adagio and Fugue in C minor had a warm, rounded sound, though it lacked some needed rhythmic energy. Following it was Astor Piazzolla’s “The Four Seasons of Buenos Aires,’’ for violin and strings. Though written for a conventional concerto grosso ensemble, it’s infused with the feel of Argentine tango and uses all sorts of unusual sonic effects. Much of its interest lies in the lengthy violin solos, which range from flashy virtuoso runs to smoldering lyricism. All of these were dispatched with the requisite fireworks by Irina Muresanu, whose combination of fire and poise made the performance irresistible. A couple of cello solos were admirably performed by Joshua Gordon.