Chambers is the 2013 debut of Spektral Quartet, a Grammy-nominated string ensemble that often operates in the classical realm and just as often redefines it. The album is an entirely Chicago affair, released on Parlour Tapes (a local cassette-focused label dedicated to contemporary art music) and featuring works by six local composers—which Spektral Quartet attacks with Windy City grit and passion. On the LJ White piece Zin Zin Zin Zin (credited to Liza White and inspired by Mos Def's wordless freestyling on the Roots song "Double Trouble") the musicians get about as percussive as possible while mostly bowing their strings—you can hear them strike their instruments while making sonic booms of downstrokes.