Unfortunately, I have never been able to collect all the notes before the ghosts stop spawning.
Ah, that's why. You're supposed to dispell the ghost with the "F" note first, as you were told in the Directions and Cautions screen.
Hmm... but how do I know which one that is before clicking on it?
The ghost that carries the "F" note doesn't growl when you tap/click on it; it sounds a sweet "F" note :) Tap/click on him enough times to get the "F" note out of him.
Whew, got it. That was a little obscure, though.
Maybe I should've added a visual cue as well. I'm glad to liked it.
It's always good to see something original and intriguing!
But this was a tad obscure.