<p>Ask yourself this question: what will the musical supplement tell them about you that your list of musical accomplishments won’t? My son is interested in music composition, so his supplement included scores and a CD of music–the list of accomplishments can’t convey what the music is like, so a supplement makes a lot of sense for somebody like him. For a performer, I think the question is more difficult–your resume will show that you are a top performer. Will a CD add to that by demonstrating impressive performance ability? It seems to me that if you are a very accomplished performer and your music teachers/directors encourage you to submit a supplement, I don’t see how it is likely to hurt you.</p>