When people think of a carousel (aka Merry Go Round), this is the sound that usually comes to mind:

A Band Organ

WurliTzer, manufactured a small but sturdy band organ in the late 1800's in their North Tonawanda Band Organ Works division.  Here is a beautiful example of a fully restored Model 12 originally built in 1893.

"EL CAPITAN"  March by John Phillip Sousa