"Paul McCartney may be the closest thing our generation has produced to Franz Schubert -- a master of melody, writing tunes anyone can sing, songs that seem to have been there all along. Most people don't realize that "Ave Maria" and "Serenade" were written by Schubert . McCartney writes with similar universality. His "Yesterday" has been recorded by more musicians than any other song in history. Its stepwise melody is deceptively complex, drawing from outside the diatonic scale so smoothly that anyone can sing it, yet few theorists can agree on exactly what it is that McCartney has done."

“Musical novelty attracts attention and overcomes boredom, increasing memorability.”

“Recent research in social psychology has shown that happy people are not people who have more; rather, they are people who are happy with what they already have. Happy people engage in satisficing all of the time, even if they don’t know it.”

“We may have had music before we had a word for it.”

“Music's evolutionary origin is established because it is present across all humans; it has been around for a long time; it involves specialized brain structures... and it is analogous to music making in other species.”

“Cosmides and Tooby argue that music's function in the developing child is to help prepare its mind for a number of complex cognitive and social activities, exercising the brain so that it will be ready for the demands placed on it by language and social interaction. ...Mother-infant interactions involving music almost always entail both singing and rhythmic movement...”

“I think we will see personalized music stations in the next few years... controlled by computer algorithms... I think it will be important that... listeners have an "adventuresomeness" knob that will control the mix of old and new, or the mix of how far out the new music is from what they usually listen to.”