This folk pop melody is very slow, suitable to full disclosure of the vocal. Therefore, you can find so many singers, bands, choirs, groups and duos who demonstrate their voice excellence and their reading of the melody. Thomas Bullard stepped in the long line of those who have tried it. What can we say? We still prefer the version of Christina Rossetti, though she covered the sound of Mormon Tabernacle Choir, who did the original.
Reference:Thomas Bullard on IMDb