This is a Marian song, suitable for a prayer service or for use during Mass. As a ministry song it's particularly effective, because in between verses you can guide the gathered assembly to bring to mind who is being prayed for. For example before the second verse, you could have the people ask Mother Mary to pray for a group of people, like the unborn, the elderly or victims of a natural disaster. For verses 3 and 4, have the people bring to mind a special person in their lives (him, then her) that need special intercession.
Also if it happens to be the feast day of another Saint, feel free to abridge it. For example, Saint Theresa pray for us, or Saint Alphonsus, pray for us, etc.
This is a lead sheet of course, with the chords written in above the melody. If anyone needs a piano arrangement for this, e-mail me and I'll get one made and posted.
Hail Mary, full of Grace!