C

[henrikhank]

2 questions:
When you play old music, i.e. classical and other music, how do you know what we mean by C today is what they in those days meant by C?

and we say that C1 AND C3 are both C. I can accept that but what do they have in common that makes them so simmilar? I mean, you pess two different keys and still you get to hear C.

[mikeowski]

#1 I heard music in the baroque era or at least orchestras had their instruments tuned about 1 half step lower than they have them today, so actually the c today is the b of earlier days.

#2 C1 and C2 are related in that the string of a C2 is half the length of a C1, C3 half that of C2 and so on. Also they sound related to a human brain, so thats why they were grouped that way.

I'm sure this will explain it a bit more thoroughly.

[chadbrochill17]

2 questions:
When you play old music, i.e. classical and other music, how do you know what we mean by C today is what they in those days meant by C?

and we say that C1 AND C3 are both C. I can accept that but what do they have in common that makes them so simmilar? I mean, you pess two different keys and still you get to hear C.

Because all music really is is just sound waves. Integer multiples of a frequency result in octaves and that's just the way physics works. After all, there is nothing really as a 'c'. It's just a frequency that we have designated to be important