Your question was a little strangly worded but when plucking the strings, they vibrate and depending on the thickness of the strings, make a note
Some popular mandolin-like instruments used in traditional folk music include the bouzouki, the octave mandolin, and the mandola.
Mandolin.....maybe
fiddle and mandolin
A banjo-mandolin is a four-stringed instrument with a body of a mandolin and the neck of a banjo.
mandolin
Stiver Mandolin
Mandolin Wind was created in 1971.
mandolin (apex)
Mandolin Rain was created in 1987-01.
Fiddle and mandolin APEX :P
Most of them used lutes, but some may have played mandolin.
A mandolin http://en.wikipedia.org/wiki/Mandolin