Ne(x)tworks String Quartet

Making its first New York appearance since playing Morton Feldman's String Quartet No. 2 in Brooklyn last year—hey, it takes a minute to recover from a six-hour piece—this keen group offers premieres by two members of the Ne(x)tworks collective, Shelley Burgon and Yves Dharamraj. Also on a stuffed bill are pieces by Earle Brown, Wadada Leo Smith, Cornelius Dufallo and Miguel Frasconi.