Amnesia: A Machine For Pigs Discussion Topic Part 1

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With modern tuning, on pianos particularly, works on the principle of well temperament. For instance if you tune the piano so the C, and G are a fifth apart mathematically (3/2) and go from there, music in other keys will be out of tune. This is because in the baroque period we simplified the amount of notes from around 18 to 12 which means that we approximate note relations for a 12 note system. Piano tuners thus tune everything roughly by ear. It's quite complicated to explain but some videos do it quite well. Keys on the piano and other instruments have different amounts of overtones because of this approximation and as such sound ever so slightly different.

Um, would you mind linking to these videos you are referring to? As far as I know, there is no difference between the keys, unless you are a machine. Sure, there is a timbral difference between the strings of the piano, but you can play any key in any register so while you cannot go down to G0 in G major you can play A0 and every note up to C8 and there will be no discernible difference in mood. I agree there is a contextual difference, like the example I just gave: If a composer wants that really low tonic he obviously is going to want to transpose it to another key (piano - of course).

Are you honestly saying you can pick up on inaccuracy in tuning of only a few cents? Even then, that has nothing to do with the keys themselves, which ideally should be completely equal, no matter what some string of wind players are wont to do.