To portray the high-pitched Galinda in the film adaptation of “Wicked,” Ariana Grande put in “a lot of vocal work.” But just what kind of effort is needed to make one’s voice higher for a role? Before ...

So you’ve decided you want to learn how to sing, or you’ve recently taught yourself how to do it. If you’ve mastered the basics or you aspire to become a professional singer, you know there’s more to ...