The document discusses spirituals, which are American Negro folk songs of religious character. Spirituals expressed the hopes of slaves for freedom and justice in the afterlife. The texts of many spirituals were based on simple phrases from the Bible. Musically, spirituals show influences from African tribal music like syncopation and call-and-response structures, as well as from European religious and harmonic styles. There are three types of spirituals: lively and rhythmic, solo and choral response, and slow and sustained. The document encourages singing the spiritual "My Lord What a Mourning" with feeling and beautiful tone.