I would like to celebrate my birthday at a Jazz brunch that doesn't sacrifice the food for the music. My group of 10-15 people will include a vast range of ages from kids to grandparents, so the place needs to have very broad appeal. Some are from out of town and I'd really like them to feel they've seen something that is unique to New York. It doesn't have to be fancy or formal but it shouldn't be sleazy, either. The brunch can be either Saturday or Sunday, and can be anywhere in Manhattan. Please, hounds, help me out!