<p>zoidberg, I don't know what colleges are you looking for, but if you are thinking about Harvard, Yale, Princeton, etc... I'm sorry to say unless your piano playing (I'll think the same for violin, though I don't really know about it) is at a VERY HIGH level and have a REALLY GOOD recording, your tape will do almost nothing for you. </p>
<p>I'm speaking from my limited experience... I am also an Asian, have very competitive scores, competitive GPA/course load, and blah blah blah... And one of my two main passions is piano. I took private lessons for more than 11 years, won quite some competitions, and had even wrote an essay about my passion. Now that I'm accepted by great conservatories for piano performance I can at least be sure of my ability, but as I'm rejected from Harvard and Yale, I assume that my tapes help me very little, if anything, to make me stand out... </p>
<p>I may be wrong, but if your time is divided among 3 instruments, you might not be extraordinarily good at any particular one, and mere proficiency will not help much. </p>
<p>But there's nothing wrong with sending tape for all of your instruments, especially when you are not sure about how much they will help you. It certainly won't hurt your chance, but make sure that you don't expect your music extracurriculars to make you stand out or help you in any significant ways. (it's a sad truth, but I'm sure all those top-tier schools are swamped by decent musician applicants and their recordings.) </p>
<p>If you are looking for less competitive schools, it is different. I have no direct experience, but as far as I know, the less competitve schools pay less attention to the music tapes (the ivies & other ultra-competitive schools usually send the tapes for faculty evaluation, but the less competitive schools do not guarentee any evaluation and frequently have the admission officers listen to them). Send something unusual (your 3rd instrument), or very flashy etudes, etc. (for piano or violin) will definitely impress the admission officers. :)</p>
<p>Good luck!</p>