Bach's "Scilliano"
A mandolin is a stringed musical instrument in the lute family and is generally plucked with a plectrum. It most commonly has four courses of doubled metal strings tuned in unison, thus giving a total of 8 strings, although five (10 strings) and six (12 strings) course versions also exist. A instrument used much in the works of Vivaldi and Montiverdi, but fell out of favour in later Classical Music, but it works well in this piece by J S Bach.