Christopher's "A Song to David" is an attempt to bridge the gap between human-written poetry and divinely inspired Biblical poetry. It focuses on the relationship between humanity and God, as well as mankind's desire for fulfillment and happiness. David was one of Israel's greatest poets and musicians. His songs were so popular that they still are sung by people around the world today. In the Book of Psalms, the singer/writer acknowledges God as his source and honors him with poems describing his love for humanity, nature, and his chosen people, Israel. The psalms also discuss the difficulties of living in this world while trying to follow God's law. They appeal to God to help believers face their problems courageously. Psalms was probably composed between 7th and 5th century B.C.E., but many scholars believe that several poems may have been combined over time to form a single song. There are 22 songs in all, of which 21 have been attributed to David. The last one has not been identified yet. However, it is believed that it was probably written by another poet named Solomon. People start singing "A Song to David" after Christopher wrote the first verse explaining how humans write poems to express themselves.