Carrie Underwood singing "O Holy Night" is heavenly ... She also collaborated with former Voice Coach John Legend on the emotional original ballad "Hallelujah," as well as featuring Isaiah ...

One listen to Susan Boyle's mesmerizing cover of "O Holy Night" will do the trick. In 2010, Boyle took the stage on the UK-based Alan Titchmarsh Show with a beautiful rendition of one of the most ...