<p>Ok, so, no, you’re not participating in all of those activities at the same time. Being in a club or band is not the same thing as participating in it. IE - you’ve been inducted into NHS, but you aren’t actually doing the tutoring yet. Same with Stage Crew and Tennis. You did participate in those things for a few months. You’re not currently participating in them. Important difference! 
That accounts for a lot of holes in your logic here.</p>
<p>You mention the honors band, but what about marching band, the symphonic orchestra, and the symphonic jazz band? Those are three other bands you’re supposedly participating in. If they are all the same band, don’t mention it four times. On the other hand, if they’re different bands… how committed can you possibly be to each band? (The clear answer is ‘not very’.) </p>
<p>The reason I am placing importance on this is because when you’re applying, you’ll want to make it very clear that while you’ve done all these wonderful things, you’re not currently doing them all at once. That would be absolutely humanly impossible, and there -are- students who can (and do) try to lie on their college applications and claim they’re invested in clubs that don’t exist or whatever. Right now, you look like one of those applicants, so if you follow the advice given above, you’ll look like a dedicated hard worker as opposed to… someone trying to game the system (or worse, someone who has literally no social life, which probably isn’t the case, right? :P)</p>
<p>To better your chances at admission, stop trying to participate in so many activities and focus on your grades. I have several friends like you at CMU - they’re in every club and love what they do, but their grades aren’t so hot. It’s not serving them well in terms of academic success. </p>
<p>Additionally, focus on clubs which are relevant to your area of study. You’re going into MCS/HSS in the sciences and from the looks of your other posts you’re trying to study premed. That’s cool. Now focus on your hospital volunteering and drop the Tae Kwon Do and stagecraft. Seeming diverse to adcoms is different from seeming like an ADHD patient who can’t figure out what they want to do. Keep robust activities such as your bands - it seems like you are very invested in music, and that’s an excellent activity that ‘rounds out’ your application. Keep NHS and your leadership roles. Drop the excess baggage.</p>
<p>Lastly: you’re trying to go into premed and you haven’t taken AP Bio. I recommend you sign up immediately. It would be a poor decision to declare yourself a premed applicant and then have no AP Bio under your belt.</p>
I’ve also never heard of an out-of-school marching band. Where would you play? NHS is also a club.</p>