Hallelujah! 5 fun facts about ‘The Messiah,’ to be performed by Handel Choir of Baltimore.

No one today knows the name of one of the great, unsung heroes of the classical music canon — the composer George Frideric Handel’s tailor. Without the garment-maker, the world would never have experienced “The Messiah,” the 283-year-old blockbuster based on the King James Bible. The oratorio, an orchestral and vocal work often on a…