This New@Night is not only fresh music, but also arranged for the unique instrumentation of flute, clarinet, violin, cello, and piano. The cutting-edge Third Sound ensemble kicks off their week in Portland with the world premiere of Cuban-American Patrick Castillo’s ephemera, and works by composers Lembit Beecher (Estonian-American), Edvard Baghdasaryan (Armenian), and Magnus Lindberg (Finnish).