Sir Compton MacKenzie recalled on his returning to his island home in Barra the lamps from the home dotted around the Island, he heard the music coming out across the water, he noted on his journey the lack of sound from some of the other islands, they were of course under the stern discipline of the Kirk.
MacKenzie loved his Sunday evenings on Barra when Ceilidhs were a regular feature, he detested the rigid hand of the Presbyterians in supressing the traditional music in the islands under their control, this was in the the 1930s.
I would say you may have heard the odd song or bits of music on the Scottish mainland, but it is a well known fact that the fiddle was regarded by the Calvinists as an instrument of the devil.