A recording of the crowd at charing cross station. Not much that seperates them from other crowds, but the shape of the space might change the dynamic of the sound a bit. Not sure. Recorded on an iphone.
Mono field recording of a bonfire: crackling fire, screaming children playing, jumbled voices with an occasional comment which can be distinguished from the crowd.
The ambiance recorded in the crowded cafeteria at siam paragon shopping complex in the heart of bangkok, thailand. Recorded with a cheap omni-directional condenser microphone.
Crowd at a college graduation, you can hear the graduation march being played in the distance and the crowd chatting around you. Recorded on my tascam dr-40.