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There are many types of stringed instruments. The violin family is made up of the violin, viola, cello, and double bass. Fretted instruments (frets are strips that show players where to put their hands) include the banjo, mandolin, lute, ukulele, and guitar. Related to these instruments are the lyre and the harp. The dulcimer, zither, and psaltery form another family, whose strings are stretched over flat sound boxes. Finally, there are the keyboard stringed instruments such as the piano, clavichord, and harpsichord.
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