<p>Do you need to decide now? Unless you are applying to schools that require you to apply to a specific school or program (they have an undergrad school of business perhaps), why not take classes in business, computer science and music? You may discover that the way computer science is taught in high school is nothing like college and you enjoy the material more. The intersection of business and music, or business and computers can lead you in interesting directions professionally - or you may discover something else entirely.</p>
<p>Even if you do have to pick a major now, there is no reason and no penalty for changing it (multiple times even). Just make sure you know the barriers to entry and exit at the schools you are applying to. </p>
<p>By the way, try the SAT. Some kids do substantially better on it.</p>