Other forms: arpeggios
An arpeggio is a series of increasing or decreasing notes played one after another, rather than all together as a chord. When musicians are first learning an instrument, they often practice arpeggios.
String instruments commonly play arpeggios, especially violins and violas. You can also play an arpeggio on a banjo, bass guitar, or a keyboard instrument like a piano. It's also possible to sing an arpeggio, emphasizing each individual note. The word is Italian, from arpeggiare, "to play upon the harp," and ultimately from arpa, or "harp."