Jackendoff, together with
Fred Lerdahl, has been interested in the human capacity for music and its relationship to the human capacity for language. In particular, music has structure as well as a "grammar" (a means by which sounds are combined into structures). When a listener hears music in an
idiom he or she is familiar with, the music is not merely heard as a stream of sounds; rather, the listener constructs an unconscious understanding of the music and is able to understand pieces of music never heard previously. Jackendoff is interested in what cognitive structures or "
mental representations" this understanding consists of in the listener's mind, how a listener comes to acquire the musical grammar necessary to understand a particular musical idiom, what innate resources in the human mind make this acquisition possible and, finally, what parts of the human music capacity are governed by general cognitive functions and what parts result from specialized functions geared specifically for music (Jackendoff & Lerdahl, 1983; Lerdahl, 2001). Similar questions have also been raised regarding human language, although there are differences. For instance, it is more likely that humans evolved a specialized language
module than having evolved one for music, since even the specialized aspects of music comprehension are tied to more general cognitive functions. ==Selected works==