okay, so now that i have tasted what first trombone music does to your lips, i have a question. when i switch form high notes to low notes my lips are glued to the mouth peice, from the high notes, so then the low notes i play sound like farts. what the heck is this?

your putting to much pressure on your mouthpiece when you play the high notes, dont force the horn into your face another words, bring your face to the horn. also make sure you drop your jaw enough to get to the lower notes