Toneheights?

[Shaoshi]

What exactly are toneheights and how could different toneheights make a track sound out of tune/key?

[TheRavestyler]

If u mean the Pitch. here you go . google.

http://en.wikipedia.org/wiki/Pitch_(music)

Wikipedia Achieved By Google.
Pitch circularity is a fixed series of tones that appear to ascend or descend endlessly in pitch.
Pitch is often defined as extending along a one-dimensional continuum from high to low, as can be experienced by sweeping one’s hand up or down a piano keyboard. This continuum is known as pitch height. However pitch also varies in a circular fashion, known as pitch class: as one plays up a keyboard in semitone steps, C, C♯, D, D♯, E, F, F♯, G, G♯, A, A♯ and B sound in succession, followed by C again, but one octave higher. Due to the fact that the octave is the most consonant interval after the unison, tones that stand in octave relation, and are so of the same pitch class, have a certain perceptual equivalence—all Cs sound more alike to other Cs than to any other pitch class, as do all D♯s, and so on; this creates the auditory equivalent of a Barber's pole.

U could Use google , simple as that to find your answere.

[Shaoshi]

I'm not sure if toneheights is referring to pitch, it may be referring to harmonics/upper partials?