Holiday Carols

I just read a blog of a good friend of mine which supported the use of "Holiday Concert" instead of "Christmas Concert" as the title for a High School band event that just occurred. While his reasoning was sound, I'm wondering about it a bit.

If the concert contained music from the Jewish winter holidays, Muslim winter holidays, and Christian winter holidays, then by all means call it a "Holiday Concert." But if contained Christmas carols, then it should be a "Christmas Concert."

Just my thoughts.