If you know anything of the music of the Italian double-bassist and composer Stefano Scodanibbio (1956-2012), you'll know he had a special fondness for the flutey, whistling sound of string harmonics. His arrangement of three movements of Bach's Art of Fugue and groups of Spanish guitar pieces (by Tárrega, Llobet, Aguado and Sor) and Mexican songs (traditional and popular) are not only flecked with octave displacements, but are also extraordinarily distended in tempo to allow time for the harmonics to sound and register fully. The process is fascinating if borderline perverse, even in the hands of the excellent Quartetto Prometeo. Don't think of them as arrangements – reinvention is definitely the right word. url.ie/7ebo