Sixty Strings is an album of two epic duets by Eric Carbonara (22-string upright Chaturangui guitar) and Jesse Sparhawk (38-string lever harp). While Carbonara has studied Chaturangui extensively with Pandit Debashish Bhattacharya in Kolkata, and Sparhawk was classically trained by major figures of the harp world in his formative years, the music here is their own—not a mashup of quasi-orientalism and conservatory bloodlessness. Both side-long tracks lay out a spacious framework, with the two pl…