Mozart’s F minor piece for Deym did not gain the title ‘Fantasia’ until it was arranged for piano duet during the last century. However, it is a totally appropriate name for a piece which is even more fantastic than the machine for which it was created. It begins, rather as Handel’s Messiah opens, with a serious overture in French style, then there is an Andante worthy of the finest string quartet before the serious overture returns. Both parts of the overture explore the device of fugue—a reminder that Mozart had studied the music of Bach. Mozart’s technique and invention in this medium rival the mathematical precision which created the interlocking gears of the mechanism for which the Fantasia was written.
from notes by Ian Carson © 1994