Fanny Crosby was an American hymn writer and poet known for her prolific output of gospel songs and hymns. Despite being blind from infancy, Crosby wrote thousands of hymns, including classics like "Blessed Assurance" and "To God Be the Glory." Her work has had a profound influence on Christian worship and hymnody, and her hymns continue to be cherished by congregations worldwide. Crosby's legacy as a pioneering hymn writer endures in the field of religious music.