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Music theory encompasses the nature and mechanics of music. It often involves identifying patterns that govern composers' techniques and examining the language and notation of music. In a grand sense, music theory distills and analyzes the parameters or elements of music – rhythm, harmony (harmonic function), melody, structure, form, and texture. Broadly, music theory may include any statement, belief, or conception of or about music. People who study these properties are known as music theorists, and they typically work as professors in colleges, universities, and music conservatories. Some have applied acoustics, human physiology, and psychology to the explanation of how and why music is perceived. Music theorists publish their research in music theory journals and university press books.