Guitarist Chris Forsyth and trumpeter Nate Wooley share an almost anthropological approach to their respective instruments. Both have studied and even deconstructed the more traditional stylistic precedents — Wooley plays modern jazz in his own and others’ bands, and Forsyth has drawn from rock and blues in his solo work and in the un-categorizable trio Peeesseye. But each has also dissected and minutely explored the entire soundworld of their axes, discovering sonic possibili-ties unintended but enticing. Their pair of duo releases, The Duchess of Oysterville (2007) and The Duchess is Dead, Long Live the Duchess (2009), are hushed and rigorous, absorbing in the depth of their constrained ambiance. There’s a suspense in knowing that an eruption of noise could come at any time, sustained through a taut drone of buzzes, resonance, scrapes and gurgles.