"For at that moment, a curious little procession was approaching - eleven Mice, six of whom carried between them something on a litter made of branches, but the litter was no larger than a large atlas. No-one has ever seen mice more woebegone than these. They were plastered with mud - some with blood too - and their ears were down and their whiskers drooped and their tales dragged in the grass, and their leader piped on his slender pipe a melancholy tune." - C.S. Lewis, Prince Caspian.

I suspect Lewis had something like this in mind, but bagpipes are a perfectly acceptable interpretation of the scene.