<p>Art and music supplements are separate from the application, and are supposed to be sent (with the appropriate forms) directly to the art or music department for evaluation (and the deadline used to be earlier for them than for the rest of the application, so pay attention to that). You still submit the common app on line - I don’t think Stanford even accepts paper applications any more.</p>
<p>No more than 10 samples means just that - 10 max, but you can always send less.</p>