Sacred music refers to compositions sung in worship or in reverence to the Supreme One of the Universe, or for religious purposes. Most composers of religious music are influenced by their own faith and veneration of God. Christians and non-Christians like the Hindus, Sikh, Jews, Islams, Shinto, Buddhist and many other religions composed their own religious music for worship, prayer, and meditation. The lyrics, tone, and singing reflects holiness and deep respect for the Most Holy One. Sacred music is also sung by believers to express emotions, sorrows and joy as in the case of David. His musical compositions, collectively called the book of Psalms are the earliest collections of sacred music which is still sung in Christian and Jewish churches.
Sacred songs are originally more homophonic or monophonic which means that they either sound alike or sung in one voice, very solemn, and very uplifting to the spirit. Among the most famous sacred song is "O Lord, Make Thy Servant" by Byrd which is beautifully sung by Westminster Cathedral Choir during mass.