Beethoven and numbers on Korean shortwave

Dec 9 (Reuters) - As a scratchy rendition of Beethoven's Piano Sonata No 8 fades into a sea of shortwave radio static, a robotic female voice starts speaking in Korean. "Number 1913, number 1913, incoming message," the voice says, before reading out seemingly random sets of numbers.

Read the intersting Reuters story at  :

http://www.reuters.com/article/2013/12/08/korea-north-spies-idUSL4N0JK0GM20131208