while you have been doing a great job with the instrument pages, the titles of the pages need to be in sentence case, such as "Pearl's saxophone" instead of "Pearl's Saxophone." another rule of the manual of style is that commas do not belong before episode names.
also, i like your icon! i used to watch the aristocats a lot when i was a kid, and i remember how the scene where the cats walk on the piano inspired me to climb on top of my aunt's piano. she did not take it well.