Original Soundtrack composed by: Jeffery L. Briggs, Ken Lagace and Roland J. Rizzo
Amiga Soundtrack by: Allister Brimble and Anthony Putson
The appropriately titled "Little Fiddle" is a little track (only slightly longer than 30 seconds) that just features the fiddle as an instrument. It's a light-hearted interlude that fits nicely between the longer tracks that make the Colonization soundtrack.
EDIT (15/10/2016): A fellow YouTube user +Plastiware has alerted me to the fact that despite me originally advertising these tracks as the Amiga version of the soundtrack, it's probably not entirely accurate. I originally marked these as the Amiga version due to the source MP3s I used stating Allister Brimble and Anthony Putson as the composers, but when comparing these tracks to Amiga versions of the soundtrack on YouTube and then comparing it to a DOS CD version, it seems these are most likely from the DOS CD version. Apologies for the mistake.
[ VIDEO: Choicest VGM - VGM #237 - Sid Meier's Colonization - Little Fiddle ]