Surging player piano sales.What's the fastest growing product segment within the diverse music products industry? Right now, its electronically equipped player pianos player piano, an upright piano incorporating a mechanical system that automatically plays the encoded contents of a paper strip. This strip, perforated with holes whose position and length determine pitch and duration, is drawn over a pneumatic device that shoots like the Yamaha Disklavier and the PianoDisc and QRS QRS A pattern seen in an electrocardiogram that indicates the pulses in a heart beat and their duration. Variations from a normal QRS pattern indicate heart disease. Mentioned in: Bundle Branch Block player piano systems. For the first nine months of 1994 shipments of these instruments advanced to a brisk Brisk as a proper name may refer to:
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