It's more like, it is either 4-3 or 4-5.
The bottle that Penguin tells, it's supposed to be on a half-flooded screen, and not visible on first sight. Hit A first, then you can quest it. Get the bottle, and open for your Music Sheet
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I'm pretty sure you lower Fiaa's trust a little bit.
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Remember kids-
Don't take life seriously.
No-one gets out alive anyway.
I, personally, plan on living forever. Going well so far.