Harmonic
Part of speech: adjective
Definition: Pertaining to harmony. Pleasant to hear; harmonious; melodious. Attribute of many mathematical entities that only in few cases are obviously related. a component frequency of the signal of a wave that is an integer multiple of the fundamental frequency.
Example sentence: I prefer playing in songs where I have a tempo, groove and harmonic map to hang on to.
Acoustics
Part of speech: noun
Definition: The physical quality of a space for performing music.The science of sounds, teaching their nature, phenomena and laws.
Example sentence: With electronic music, you are not confined to the acoustics of a concert-hall, and that inspired me to bring my performances outdoors.