The act or technique of playing the notes of a chord rapidly one after another in a sweeping motion.
From arpeggio + -ation (suffix forming nouns from verbs). This abstract noun developed in musical terminology to describe the action or style of executing the arpeggio technique on various instruments.
Arpeggiation is one of those techniques that sounds complicated but feels natural once you hear it—it's why harp music is so soothing and why piano teachers have students practice arpeggios to develop fluidity and expression.
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