The term 'Giant of Classical Music' can be summarized by the crossword solution of 'BACH'. Johann Sebastian BACH was a German composer and musician of the Baroque period. He is widely regarded as one of the greatest composers of all time and is known for his complex and intricate compositions. His works include the Brandenburg Concertos, the Mass in B Minor, and the Goldberg Variations. He is also credited with developing the modern form of the fugue.