Comparing offers

So my son got into several schools for UG, performance major All offered merit money. Unfortunately, the one he liked the best offered very little. He had his heart set on this school. Would it look bad to contact the school to see if there are any other scholarships or aid available? Is this frowned upon? If anyone has done this in the past, do you have any suggestions? Thanks in advance for any replies.

Check out this older thread: http://talk.collegeconfidential.com/music-major/1442958-scholarship-%C2%93negotiations%C2%94-did-you-do-it-p1.html