The ratio can even be found in the construction of string instruments, such as this Stradivarius. He was known to use the ratio to determine the placement of the F-holes, which are often set at a geometric distance apart; that distance is a Fibonacci number.


It is also represented in the spirals of the violin's scroll.
Even though the Golden Mean spiral above has fewer turns—two—than that of the spiral taken from the sample scroll, and even though each violin maker's scroll is a little different, it should be obvious that the typical violin scroll is loosely based on the Golden Mean spiral.