You've burned your peacoat, your sunglass tan is coming in nicely and the snow that wouldn't die is a distant memory. Replace the clatter of your air conditioner with the sound of notes blowing through blades of grass at one of the many outdoor concerts that are cropping up all over town. We've compiled the best of the season, from the all-out, flip-flop destroying extravaganzas to the more intimate evenings under the moon.