Phoebe Knapp (1839-1908) was an American composer and pianist, best known for her contributions to hymnody. She is particularly renowned for the composition of the melody to the hymn "Blessed Assurance," which was written in collaboration with the prominent hymn writer Fanny J. Crosby. This hymn, published in 1873, has become one of the most beloved and frequently sung hymns in Christian worship. Knapp's musical style is often categorized within the sacred music genre, reflecting the emotional and spiritual depth that resonated with congregations during her time. Beyond "Blessed Assurance," she composed numerous other hymns and contributed significantly to the music of the Methodist Church. Her impact on music lies in her ability to craft melodies that enhance worship experiences, contributing to the rich tradition of American hymnody. Knapp's work continues to influence contemporary worship music and remains a staple in many hymnals today. Despite her significant contributions, she is less well-known than her contemporaries, but her legacy endures through the enduring popularity of her compositions.