Christmas Carols - 1921

I didn't see much reference to Christmas carols...at least not in the newspapers from December 17, 1921...

Church of the Beloved Disciple

39TH ST., BET. MADISON AND PARK AVS.

REV. GEO. R. VAN DE WATER, D.D., Rector.

Communion, 8 and 10, 11, Rev L. E. Sunderland, Supt. City Mission Society,

CHRISTMAS CAROLS, Ancient and Modern. Organ, 'Cello, Violin, Harp.

4 P. M.

Silent NIght, First Noel, Three Kings, Lo, How a Rose, 1609, Slumber Song, Song of the Angels.

--The New York Tribune, December 17, 1921, Page 17

I'd never even heard "Lo, How a Rose" (the 1609 appears to refer to the arrangement) or "Slumber Song." I'm assuming those are these two songs.





I can't find which song is "Song of the Angels."