What is the name of Christmas song possibly which sung by an all male groupband when main singer singing rest band are harmony?

"O Come, All Ye Faithful" is a traditional Christmas carol that has been sung by various artists, including all-male groups or bands. The song features a main singer who sings the melody, while the rest of the band provides harmony. The specific rendition you're thinking of may vary, and it's possible that you're referring to a particular arrangement or performance of this song.