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<p>Just count the units for the CS major + units for the music minor + units for any breadth requirements not fulfilled by the major and minor - any overlapping course units or units for courses bypassed by AP or other credit going in. If it is substantially more than 128, then it may be difficult to squeeze all of that in.</p>
<p>Another thing to consider is how many of your CS courses have programming (time consuming) and how many of your music courses have performance (more time).</p>