I’m currently in Gather Comprehensive looking for David Haas songs that I have missed from other sources in the past.
Here, David Haas has used Joel 2:12-13 and Psalm 51 to craft this moving song for Ash Wednesday and Lent more generally. A cantor seems needed as the verses overlap with the echoing assembly part in the refrain.
The sheet music is available at GIA where the text is hidden in the preview.
My backing adds rhythmic elements: