Oorspronkelijk: Joan Tower. This work derives from a drawing the composer once did of colour rays emanating from a black piano-like object.
Vertaling: Zwart Topaz. Partituur. Onderdelen. Bladmuziek. Piano, Clarinet, Flute, Trumpet, Trombone, Double Percussion. PF. CLT. FLT. TPT. TBN.