Looking for music themed anime

So, I will fully admit that I'm a bit of a classical music geek. But with that confession, I'd like to ask for some help finding more music themed anime. The only ones that I've been able to find so far are more rock inspired and the like.

I'm looking for something more classical -- perhaps violin or piano focused. It kind of surprises me that I haven't been able to find anything yet, but I'm not that good at this kind of thing.

Any help would be greatly appreciated.