1) Musictheory.net
2) Home.mak.com (Click here for instructions)Broken Instrument? Try these fixes first:Trumpet
No sound/Weird Sound?
Airy Sound? Embouchure Problems?
Clarinet
Puffing Cheeks? Weird Sound?
Sax
No sound? Squeaking?
Trombone/Baritone Horn
Only air? Can't hit that low B flat?
Flute
All air, no sound?