Final answer:
George Frideric Handel composed the music for "A Song for St. Cecelia's Day," a cantata celebrating the patron saint of music, Saint Cecilia, with text by John Dryden.
Step-by-step explanation:
The famous composer who set "A Song for St. Cecelia's Day" to music was George Frideric Handel. Handel was a Baroque composer renowned for his operas, oratorios, and concerti grossi. "A Song for St. Cecelia's Day" is a cantata written in 1739 with text by John Dryden which celebrates the patron saint of music, Saint Cecilia. It is a fine example of the blend of poetic text and musical composition that was characteristic of the Baroque period. As St. Cecilia's Day is celebrated on November 22nd, this composition often marks the occasion with its rendition, making it an integral part of the musical world's history and celebrations.