I searched around TM and Google, but I can't seem to find the right search words to describe this. Recently, since the start of summer vacation, I've been slacking a little in my practice (I have no good excuse except that I was being stupid). Almost a month ago, I started up practicing two times a day like I used to, around an our a day total. It's mostly quintet stuff and Arban's, along with some improv. My tone's there, but there's something else there too... Best way to describe it is, I hear almost two different tones playing at once. One is the note I'm aiming at, and the other sounds sort of like a pedal tone. Did I do something to my chops? Am I overblowing? Am I putting too much pressure on my mouth? What can I do to fix this?