“Among a small avalanche of new piano albums, all of them brilliant, this one from the New York-based Emmet Cohen stands out because it has the rare and elusive quality of charm. All 10 pieces are perfectly serious, but not solemn; there are little eccentricities and the occasional wink. The “stride” of the title number refers to a piano style that evolved in 1920s Harlem, and the piece features bu”
