What is music?

Since this blog is dedicated to music, I guess this is a fair question. And Philip Dorrell wants to find out:

What is Music?: Solving a Scientific Mystery is a book by Philip Dorrell which explains a new scientific theory about music: the super-stimulus theory.

The main idea of the theory is that music is a super-stimulus for the perception of musicality, where "musicality" is actually a perceived property of speech. "Musicality" refers to the property of music that determines how "good" it is, how strong an emotional effect it has, and how much we enjoy listening to it.

The theory implies that ordinary speech also has this property, in a manner which may vary as a person speaks. The musicality of speech is much more subtle than that of music, but it provides important information which the listener's brain processes (without conscious awareness of the processing), in order to derive some information about the internal mental state of the speaker. This information is applied to modulate the listener's emotional response to speech, and this accounts for the emotional effect of music.

If you go to this page, you can download the book for free.