Though treating the music with great reverence, the group approaches and carries on the living tradition of tango with a distinctive sound rooted in the quartet’s unique instrumentation: Catherine Clune, violin; Joshua Brody, piano; Isabel Douglass, accordion; Greg Stephens, trombone.Their work with early Piazzolla—documented in their critically acclaimed first release, all them cats in Recoleta, vintage Piazzolla—set the ensemble in the direction back to tango’s roots.