I think it should be WTRRRCBBBA , which would make it, When the red red robin comes bob, bob. bobbin' along.
While Shepherds Watched is a Christmas carol with the initials WSW.
The Christmas song with the initials WIHIYS is Who Is He in Yonder Stall.
Nuttin' For Christmas.
Christmas angles
The Christmas song with the initials Z C is "Zither Carol". The song is a Bohemian/Czech Carol. There are at least two versions of the carol.
The real book that was made the Christmas carol
The Christmas carol with the initials DDMOH is "Ding Dong! Merrily on High."
in the bleak mid-winter
The song that contains the initials OLTOB is Oh Little Town Of Bethlehem.
A virgin most pure
Walking in the Air.
I.s.t.s.c.s.i