Can anyone recommend good place for live jazz music around Union sq or Williamsburg in New York?

I found this music "L-O-V-E" by Nat King Cole and I really like it:) but i don't know about this kind of music well. Anybody know good place where i can enjoy this kind of live music around Union sq or Williamsburg? Not too classic but casual %26amp; fun jazz bar. Any good band who plays similar kind of music?|||the blue note on west 3rd St