If you’d like to chant the Phos Hilaron, I recommend the following setting from The Hymnal 1982.
“O Gracious Light, Lord Jesus Christ,” The Hymnal 1982, #25
“Phos Hilaron,” Church of the Apostles in Seattle, WA
It’s not exactly the same, but you the following rendition(s) of the Phos are clearly based on the setting above by Thomas Tallis.
This tune can also be sung in canon (as a round) using the numbers above the music as a reference for where to enter. The second person would start at the beginning when the first person reaches “no. 2.”
A more traditional performance of this tune can be heard at http://www.youtube.com/watch?v=bYJ8SneHfT4