The composer of the most sublime music and melody ever.
If you ever get a chance to go to the Mid-Summer Mozart Festival in the S.F. Bay Area at the end of July every summer, you gotta go. Maestro George Cleve, a Mozart scholar, is the director and conductor. It is a magnificent two-week event.
Written near the end of his life, although it took him away from the Requiem when he had little time left. The Allegro section is of ethereal beauty.