Henry Wellington Greatorex (1811-1858) was an influential American composer and conductor, primarily known for his contributions to choral and sacred music. He was born in England but moved to the United States, where he became an important figure in the musical community, particularly in the realm of hymnody. Greatorex's most notable works include hymns and anthems, with "The Church's One Foundation" and "Hark! The Herald Angels Sing" among his significant contributions. He was also known for his arrangement of traditional hymns and for editing various hymnals, which helped shape the liturgical music landscape in America. His impact on music is particularly evident in his role in popularizing hymn singing in church services, promoting a more accessible style of worship music. Greatorex's emphasis on melody and harmonization influenced subsequent generations of composers and church musicians. His legacy endures through the continued performance of his works and through the hymnody traditions he helped establish in the American religious community.