This volume of Sony's György Ligeti Edition contains all of Ligeti's music either written for mechanical reproduction or arranged for mechanical instruments. Dating from his brief flirtation with the Fluxus movement, "Poéme Symphonique," scored for 100 metronomes, produced one of the great scandals of Ligeti's career. As the metronomes wind down, what sounds like a waning rain storm evolves into overlaying rhythmic patterns and finally a single metronome coming to a halt. From the other end of his career come the etudes arranged for player piano. As the Ligeti's Etudes for Piano were originally inspired by the 'Studies for Player Piano' by Conlon Nancarrow, it is appropriate that they should be transferred to a mechanical instrument. In the case of Etude 14, the original is for player piano and moves nearly twice as fast as when performed by the ad lib living pianist. The barrel organ works occupy a different category, being, for the most part, arrangements of Ligeti's earliest keyboard music. The effect is of a calliope gone mad. Everywhere the charm and whimsy of Ligeti's muse is in evidence. If Ligeti could ever be said to have written light music it is that contained in this volume.