Whether it’s Barbra Streisand’s goosebump-raising 19-second note in “A Piece of the Sky,” or Bill Withers’ iconic 18-second one in “Lovely Day,” the ability to hold a note requires a singer to ...

Every year in the Christmas season it becomes clear again that some people are amazingly skilled singers, like Mariah Carey and George Michael. Their singing can stir strong emotions. Singing involves ...