Oliver Sacks explains the how multiple regions of the brain interact to form the ways that humans interact with and create music.

Daniel Barenboim explains the importance of the time notes are sustained and also the accompanying duration of silence in musicality.

Bobby McFerrin tells two stories about villagers in Botswana and the ways music is incorporated into their life, which shaped the way he creates music.

Yo Yo Ma performs a sarabande from Bach's 5th Cello suite and explains the history of the sounds in this particular piece have travelled through different cultures.

Daniel Bernard Roumain demonstrates the many sounds the violin can imitate for a group of students.

Michael Fitzpatrick uses a composition performed on his cello to explain the nature of vibrations and frequency.

Music therapist Concetta M. Tomaino says music seems to able to reach us when movement, memory, speech, and emotion have to all appearances been destroyed by injury or disease.

In part two of the interview with Daniel Levitin, learn about his take on the purpose of music and different arguments for the evolutionary origin of music.

In part three of Daniel Levitin's interview, learn about the medical implications of the research investigating the relationships between cognition and music.

Bobby McFerrin and world musicians Yungchen Lhamo of Tibet, Christiane Karam of Lebanon, and Gino Sitson of Cameroon improvise a cross cultural melody.