Andrew Law (1749–1821) was an American composer, preacher and singing teacher. He was born in Milford, Connecticut. Law wrote mostly simple hymn tunes and arranged tunes of other composers. His works include Select Harmony (1778) and a Collection of Best Tunes and Anthems (1779). He was among the first American composers to put the melody in the soprano instead of the tenor part, and was also one of the first Americans to write about music. Andrew Law also pioneered the FASOLA system of musical notation that simplified lessons in reading music during the Singing School era of New England music. He published Essays on Music in 1814. He died in 1821.