Definition of Arpeggio
An arpeggio is a succession of notes issued from a chord.
In a chord, notes are played simultaneously, in an arpeggio notes are played independently.
Some of famous arpeggios
Beethoven: Piano Sonata No. 14 (Moonlight Sonata)
All the emotional intensity in the Piano Sonata No.14 comes from the arpeggios:
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