Details: The piano duos presented here, all drawn from the mid-20th century, have their inspiration in dance or ballet: but thankfully, that red flag for program music - is it a hopeless prisoner of a storyline or visual narrative? - shows no sign of rising. All three works stand majestically on their own: Rachmaninoff's autumnal self-eulogy, The Symphonic Dances, Barber's Souvenirs, a whimsical collage of the Gilded Era ballroom, and Piazzolla's Tango for Two Pianos (arr. P. Ziegler). And, in the case of Piazzolla, we witness the tango, as it moves from the cafe to the concert hall, shedding the strictures of dance itself.