Pointless knowledge for you to enjoy.
The Mission:Impossible theme dune goes something like this:
Dum Dum
Dum Dum
Duuum Duuum Duuum Duuum Duuum Duuum Duuum Duuum
Dum Dum
Dum Dum
So, now that that’s clear…
If you look at the pattern, it goes loooong looooong short short, etc
In Morse code, loooong looooong short short; or — .. ; is actually M I, the initials of Mission Impossible!
So, now you know.