a group of adjacent notes played on a keyboard instrument typically with the fist, forearm, or elbow, similar groupings also occurring in orchestral music. Show More
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for tone cluster music a group of adjacent notes played simultaneously, either in an orchestral score or, on the piano, by depressing a whole set of adjacent keys Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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