<p>Have you done any extracurricular math/science activities? I didn’t really do any either, but if you haven’t yet, you may consider taking the AMC12 next year. The types of problems are pretty interesting, and with enough practice you could qualify for the AIME, which won’t look bad at all. I say this because you only mentioned musical interests, not science ones. I liked band a lot too, but it will be really important to demonstrate interest outside of classes in science and math.</p>
<p>Then again, I’m really not sure what I did in that regard…</p>
<p>I think improving your SAT score is important, don’t take it cold again 
Esp. try to do better on the Math section. The first time I took it, I got a 700 on the math; overall I was fine with it but at Caltech and MIT, it’s in a pretty low percentile. I don’t usually like to think SAT scores are too important, but a low math score will put you in a bad position competitively.</p>
<p>As for whether you stand a chance, with everything you’ve listed so far, the odds would be stacked against you. That doesn’t mean not to try, though. Don’t attach an SAT score to your persona though; if you retake it and ace it, the rest of your application will be more or less the same. It’s important, but there are other important areas to highlight to improve your shot of being accepted.</p>