Great artists on each instrument, with recordings of their performances
Finale Notepad. This is the free version of the software I use to write all of the music you see on my website. The free version does not have all of the features that the full $600 version has, of course, but it has a lot. I highly recommend it, if you are interested in writing your own music. And I would be happy to help you learn how to use it.
Check this out. It is an online music writing program. But then you can search for music that other people have written, including pop songs (search for something like "Set Fire To The Rain"). And you can change the music so it fits your instrument. I just learned about this, so I don't know how to use it yet, but you guys can mess around with it and probably figure it out.
A great website for learning about your instrument for the first time. Just select your instrument from the menu in the top-right corner, and explore!
"How Playing An Instrument Benefits Your Brain"
One of the best explanations I have ever seen of what learning to play a musical instrument does to your brain, and why it is such an important part of your education. To dig deeper into this, you can also watch this talk by Dr. Sarah Jayne Blakemore that explains how the brain develops during our teenage years. Of course, you only get these benefits if you practice your instrument every day. So go practice! Now! Go! Why are you still reading? Go practice!
Two really good websites for percussion stuff.
The correct embouchure for playing the clarinet, in great detail.
"10 Simple Steps To Improve Your Clarinet And Saxophone Section"
Good stuff here. Everyone should read this and do it.
Jazz At Lincoln Center (New York) "Jazz Academy" page. Good stuff.
Flute Tips blog.
Flute embouchure help for beginners.