Play the ancient fiddler.
The right isn't right, but be quick.
Patience is a virtue when you want to leave.
Temple of Antoninus and Faustina/Water Organ (Pridie Id. Apr.)
This temple is at the northeast end of the Forum, just past the Temple of Caesar. Inside the temple is a pump and an organ. Pull the pump lever, then go to the organ and slide the knobs on the doors to open them. You'll see that you need to enter a four-letter word. Press the 9th (or 6th), 8th, 1st, and 2nd keys, spelling "NERO". (Clue: this is referred to in scrolls and notebooks as "Nero's water organ," and if you press all twelve keys in order from left to right it spells out "ROMA INCENDIT" -- "Rome burns".) VERY QUICKLY click to the LEFT (there's a niche there) -- the back wall is opening. (Although it appears that the opening is to the right, all you'll find on the right side is a soldier statue, which doesn't help you very much. If you miss the left-hand opening, just start over and enter NERO again.) Inside you'll find a wooden soldier, a piece of marble, and a scroll. Get them, turn around, and wait until the niche turns into a door, which leads out to the back of the temple. If you try to exit too soon, you'll wind up back in the organ room, and you can't get through the front doors; the head of the horseman statue turns to look at you (shades of "Jason and the Argonauts"!). You can retry all of this if you don't get it right the first time.