John Herbert Whitton Sumsion (1899–1995) was an English composer and organist, primarily known for his contributions to the church music genre. A significant figure in the 20th-century English choral tradition, Sumsion served as the organist at Gloucester Cathedral from 1928 to 1966, a position that greatly influenced his work and legacy. Sumsion's notable compositions include numerous anthems, hymns, and organ works. Among his most recognized pieces are "They That Go Down to the Sea in Ships," a well-regarded anthem, and various settings of the "Magnificat" and "Nunc Dimittis." His choral works often reflect the rich traditions of English choral music, characterized by lyrical melodies and harmonic clarity. Sumsion's impact on music lies in his ability to blend traditional Anglican liturgical music with contemporary influences of his time, helping to sustain and evolve the choral tradition in England. His works are still performed regularly in cathedrals and churches, contributing to the ongoing appreciation of English choral music, and he is remembered as a pivotal figure in the development of 20th-century sacred music.