structural:reformatting, structural:summarization
Neurological aspects

Much research has been done recently on the link between music and language, especially singing. It is becoming increasingly clear that these two processes are very much alike, and yet also different. Levitin describes how, beginning with the eardrum, sound waves are translated into pitch, or a tonotopic map, and then shortly thereafter "speech and music probably diverge into separate processing circuits" (130). There is evidence that neural circuits used for music and language may start out in infants undifferentiated. There are several areas of the brain that are used for both language and music. For example, Brodmann area 47, which has been implicated in the processing of syntax in oral and sign languages, as well as musical syntax and semantic aspects of language. Levitin recounts how in certain studies, "listening to music and attending its syntactic features", similar to the syntactic processes in language, activated this part of the brain. In addition, "musical syntax... has been localized to... areas adjacent to and overlapping with those regions that process speech syntax, such as Broca's area " and "the regions involved in musical semantics... appear to be near Wernicke's area." Both Broca's area and Wernicke's area are important steps in language processing and production.

Singing has been shown to help stroke victims recover speech. According to neurologist Gottfried Schlaug, there is a corresponding area to that of speech, which resides in the left hemisphere, on the right side of the brain. This is casually known as the "singing center". By teaching stroke victims to sing their words, this can help train this area of the brain for speech. In support of this theory, Levitin asserts that "regional specificity", such as that for speech, "may be temporary, as the processing centers for important mental functions actually move to other regions after trauma or brain damage." Thus in the right hemisphere of the brain, the "singing center" may be retrained to help produce speech.