Hiding a Morse Code Message in a Pop Song
The team began experimenting with Morse code using various percussion instruments and a keyboard. They learned that operators skilled in Morse code can often read the signals at a rate of 40 words per minute but played that fast, the beat would sound like a European Dance track.
from https://www.schneier.com/blog/archives/2015/02/hiding_a_morse_.html
Put that way, kinda of cool. Reading the original article: the team = the army. haha. Radio Bemba was involved… the goal is to communicate with FARC hostages…
How the Colombian army sent a hidden message to hostages… using a pop song.
THE ARMY AIR-DROPPED 7 MILLION PACIFIERS INTO THE JUNGLE WITH A MESSAGE ENCOURAGING REBELS TO RETURN TO CIVILIZATION
http://www.theverge.com/2015/1/7/7483235/the-code-colombian-army-morsecode-hostages