“Turetskaya,” the opening number on the Nu Haven Kapelye’s new album, Nu Haven Style — to be officially released the day of the klezmer orchestra’s annual concert at Congregation Mishkan Israel on Ridge Road in Hamden — gallops out of the gate, with horns, strings, and winds belting out the melody in unison while the rhythm section surges beneath them, an irresistible force, exploding with emotions, carrying, as so much klezmer does, simultaneous senses of deep happiness and sadness together.