Brass Quartet Horn,Trumpet,Tuba - Level 1 - Digital Download SKU: A0.1310175 Composed by Anonymous. Arranged by Simon Koepp. 19th Century,Advent,Christmas,Religious,Traditional. 5 pages. Simon Koepp #899312. Published by Simon Koepp (A0.1310175). Tomorrow Santa Claus is Coming is a German Christmas carol with a text written in 1835 by Hoffmann von Fallersleben and the melody of the French folk song Ah!, which was written in the 18th century. vous dirai-je, maman.Watch on youtube.com/@musiklust.