"It Came Upon a Midnight Clear" is a fine classic Christmas Carol, and I had no plans to do anything with it until I noticed that each of the verses could transition to a chorus that didn't exist - so I wrote new music for the existing lyrics, and added a chorus. I may eventually write an arrangement of this for choir that includes accompaniment, but I quite like this as-is as a simple carol / hymn.
The "Three Christmas Carols" choir booklet (6.875"x10.5") which includes this song may be purchased above by selecting the desired quantity, clicking the "Add to Cart" button, and following the checkout process. A low-resolution version of the sheet music may be downloaded below.
If you would like to purchase the audio recording (vocals by Matthew Curtis) used in the sheet-music video, please contact me. Excellent rehearsal tracks are available above.