So we all know the famous Obi-Wan Kyrat Dragon call right? It's so famous that Lucas can't seem to stop messing with it. So let's see why it's keeps getting changed

1977\1997: The original leaves you having 2 thoughts: (1) Oh, I'd hate to run into that creature! (2) I wonder how they made that sound.

2004: This new version sounds cool, but it basically sounds like they changed the pitch of the original

2011: Oh, don't get me started on this on. You want to know how they made this sound? Take a sound recording device. Stick it outside of a bathroom. Go into the bathroom, close the door. Go the the wall that's farthest from the door, and start making groans (like you have to take a real bad crap, but it won't come out). Now that that crap-groan recording, run it throughout a sound editing software and add an echo effect to it. And you have something known as the "Krapt Dragon" call.