in ulti whatevers crib whats that organ 4???

If you press all of the keys when playing it, then you unlock the slats on the gate that's a little ways down from the organ. Then you can get a special item. It's extremly tricky, you have to hold them all down at the same time without missing any, or it won't open completely.

(If somebody wants to describe it better, be my guest.)

Just jam the buttons many times together at the same time and a bar door somewhere in the castle should be opened. I don't exactly remember where it is. The item is pretty useful.

What the heck, I looked at a faq and it said it did nothing. Now I have to go back there again.

LOL, lying FAQ. I guess whoever wrote that FAQ just didn't know about it. But I've done it before and it's been backed up by numerous sources, so it is real.

<font color=red face="comic sans ms">In order to open the path that the organ opens, you need to get the Floodgate Key first. To get that, find the elevator room and put the lightest party (the one with the most girls) on the left-most elevator, and then change to the other party. Take these to the right side of the elevator, so that when it lowers the lighter party get raised and can get into a new room. The Floodgate Key is there.

Now that you have this key, go to the screen outside the prison and armory, and there is a wooden pole with a keyhole in near the door leading to the prison. Use the Floodgate Key there, and the gate will close and the water will stop flowing.

NOW go to the organ and play all the notes at once; and then check out the path to the right of the fountain. It should have opened up, and you will be able to get a Rosetta Stone; this path then leads into the locked door of the prison. :)