Archive for August 16th, 2007

Thursday Morning Riddle

Thursday, August 16th, 2007

Archimedes once tested me in a gold crown;
I’m one book of the seven in J.K.’s renown;
When I’m low, I could cause a whole sales force to frown;
But when music’s too loud, you just might turn me down!

Who am I?

UPDATE: Riddle solved by Brian. See comments for answer.