Ahiyah Cohen in a deep melody by Rabbi Ginsburgh, called "The Song of the Soul". The song of the soul is prayer to G-d. The numerical value of song/"shirah" equals prayer/tefillah. Our Sages say, "Would it be that a person would pray all day long". Presently, our prayers are the product of conscious effort. But in the future, our prayers will naturally flow forth all day long, prayer that is all song.