To get ready for the new AI season, spend a few minutes this weekend with our guide to melisma, courtesy of Anthony Heilbut, music producer and author of The Gospel Sound: Good News and Bad Times.

NPR: How 'American Idol' Uses (and Abuses) Melisma

Iris Quirolo, 75, who chose to watch The Sound of Music during hip surgery, said it was "a good experience".

BBC: Iris Quirolo and Dr Richard Griffiths

The music could only sound this good coming through this kind of system.

NPR: The Mix Tape: Art and Artifact