Ok so for New Years Eve, the club I'm spinning at is recording the night for a promo CD to use down the road. The question I have is how to record crowd noise and reaction. For example, JPs S&M cd has the crowd noise in the background. How did they record that is what I wanna know? All the whistling and clapping and yelling in the background is to the beats of the song, so its not anything edited in. Or is it?