Popular music owes greatly to the spirit of rebellion. In all of its diversified, experimental, modern-day micro-genres, music's roots were first watered by good old-fashioned social dissension- its incendiary heights pushed heavenward by radicals and rogue revolutionaries. And perhaps none are more influential and non-conformist than women. Always first in line to give convention a sound thrashing, women in music have penned sonic masterpieces, championed sweeping social movements, and breathed life into sounds yet unimagined. Today's guitar-wielding heroines continue to blaze the trail, tapp.