Ref [here]

Bob Dylan and Alice Cooper Play Cyber

Did you know that the theme music to Some Mothers’ Do Have Them has a Morse Code message:

Isn’t that great? It actually sounds like real music and is distinctive. And that there’s Morse Code on a Yes song …

And, while we are on Morse Code, did you know it should be named Vail’s Cipher — as it was Alfred Vail who invented it:

Ref :QI

And, so, Bob (Dylan) and Alice (Copper) play a last concert together, and take to the stage. Eve (Jihan Cooper) is in the audience, and shows no emotion. She had been backstage and had been listening to their jamming and smiled to herself on the song that she had just taken from them.

Ref [here]

They play some notes — and drop their instruments, and leave the stage:

and are never to be seen again. What message did they send to the audience? Here’s a chaser:

Cipher CTF Challenge Generator (Music cipher)