Shouldn't this be classed as a music thread rather than BS?

Tone. (1) Mus. sound, as in analysis to show that a violin note has several different tones
(2) Interval of major 2nd, e.g. C-D, E F#.
(3) Quality of sound, as in 'sweet tone', 'harsh tone', 'dry tone'.
(4) Plainsong melody, as in Gregorian tone.
(5) American usage for 'note', hence '12-tone music'

On the other hand:
Pitch. The location of a sound in the tonal scale, depending onthe speed of vibrations from the source of the sound,fastr ones produicing a high pitch and slow ones a low...

(From the Concise Oxford Dictionary of Music.)