In a time of economic and social unease music is essential for life--to kick those woes away and revitalize your spirit and state of mind. What songs do you consider your most essential to revive and rejuvenate to at the end of a trying, dispiriting day? My favorite song to do this, tried and true over decades, is Earth Wind & Fire's "September!" Every time I hear it, no matter how bad the day or situation, it always makes my spirits rise and motivates me for a new day! What is your favorite song/songs which does the same thing?