There is more than one style of the mandolin .
Other mandolin varieties differ primarily in the number of strings and include four-string models -LRB- tuned in fifths -RRB- such as the Brescian and Cremonese , six-string types -LRB- tuned in fourths -RRB- such as the Milanese , Lombard and the Sicilian and 6 course instruments of 12 strings -LRB- two strings per course -RRB- such as the Genoese .
Mandolin