Yousei Florence

Charming, disney-like experience, a fantasy fairy tale about love coupled with nice looking oldschool animation. 

Both are good old fashioned lyrical fairy tale romances. Their selling point aren't the simple coming of age stories, but the beautiful, warm and creative animation of the their respective magical lands - both works of stunning visual art and creativity. Both shows on the surface are for children, but they have tragic depth and bitter-sweetness enough to make them very watchable for adults as well.  

Both shows are about young musicians struggling to find their musical personality and style. They meet magical helpers and spend some time on magical adventures with them, learning valuable lessons. In Yousei Florence, there's some romance on top. In both shows classical music is used and very well choreographed with the animation. I know the word sounds pretentious, but I'd call it lyrical. Both protagonists eventually succeed to master music and their instrument, adding a "coming of age" story element.