[Monsoon1]

Originally Posted by John Arnold

You are confusing intonation wth the tempered scale. Intonation is concerned with how accurate the note is to being in tune. But 'in tune' usually means the tempered scale. The equal-tempered scale is structured so that only the octaves are perfect. All other intervals are approximate to what sounds 'pure' or true. For example, the tempered major third sounds sharp. If you tune the major thirds by ear, the upper string will be flat when it is used for anything other than the third in a chord. Example, if you tune to an open G chord, the second string will be flat when you play a C or D chord, where the B string becomes the root instead of the third.



By 'weird', do you mean sharp or flat?
If a note is sharp, you need to lengthen the string. If it is flat, you need to shorten it.
Instead of playing chords, you need to play individual notes. The problem with chords is explained above.

Again, does this effect an electronic keyboard?
Yes/no