[DeX-kun]

Originally Posted by Guido

Spoiler:

Now, it worries me what Pride's doing with playing stick for. The sounds feel more like a signal to Father traveling underground.

And there's also the grave issue that the army of dolls has been forced to wake-up to deal with the Mustang problem.

Yeah, I think it's pretty safe to assume that Pride is using Morse Code to alert his "father" of his predicament. I was at the edge of my seat when they revealed it in that particular scene, loved it