The celesta instruments play at the beginning of dance of the sugar plum fairy. The celesta, sometimes known as a bell-piano, is a striking idiophone that is controlled by a keyboard. It resembles a four- or five-octave upright piano, albeit with smaller keys and a much smaller case, or a huge wooden music box (three-octave).
The keys strike a graduated series of metal (typically steel) plates or bars hung over wooden resonators. A damper pedal that sustains or dampens the sugar sound is typically found on four- or five-octave models. Because of their compact "table-top" size, the three-octave instruments lack a pedal.
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