I think it looks great; I do agree with you, though, that it does seem rather bright. I'm not sure if that's necessarily a bad thing - I'm not much of a visual art person.
When we change the symbol to the instrument, maybe we should also throw in a few other "musical" things around it, such as note patterns. I think this would make the title screen tie in a little better with the title itself, though I guess we have to wait and see what it looks like once we implement the instrument as the symbol, though, and go from there.