Daniel Olson 12!:Factorial 12 Toronto, Canada: Self-published, 1997 Each somewhat unique, dimensions vary. Signed and dated.
The twelve tones of the western chromatic scale (a thru g, with 5 flats/sharps) are represented by children's coloured toy xylophone keys, housed in a foam-lined cigar box. A text on the inner lid explains that the work can produce 479,001,600 different twelve-note melodies (octave and rhythmic variations would add endless variation). The work functions nicely as a desk-top multiple or performance sound piece.