Music with staying power

Mklola Leontovych was a Ukrainian composer born in 1877.  His was descended from a line of village priests and studied at a theological seminary that both his father and grandfather attended.  His first position was as a music and math teacher and shortly thereafter began arranging simple a cappella arrangements for his choirs.  With a life long commitment to music and composing, his most famous work, "Shchedryk" was written at the age of 39.  Mklola may have been shocked to know that his simple composition would be arranged 1000's of times and performed millions of times in the century to follow. If fact, this recent arrangement has been viewed over 100,000,000 times already at youtube.