Cloud City 4-37 is the thirty-seventh level of Cloud City. To pass this level with three stars, you should pop all pigs and score at least 77,000 points.
Send the Rebel Pilot just below the first dangling pig. As they pass over the first compressor, split them to cut the chain on the right side. The falling compressor and flying TNT will do the rest of the work for you. It should wreck an entire level.