If you cringe every time someone starts howling “Hallelujah!” at the top of their lungs this holiday season, don’t blame God (or Cohen or Buckley) – blame Handel! Composed in 1741, George Frideric Handel’s Messiah might be the world’s most famous oratorio, which is essentially a large composition for orchestra, choir and soloists, and this masterpiece of the Baroque era is surely one of the most powerful pieces in classical music.