He's a vocal coach for dozens of A-listers. They taught him that being famous is more taxing than you'd think.

Eric Vetro is Hollywood's favorite vocal coach, working closely with stars like Timothée Chalamet, Ariana Grande, Sabrina ...
Yahoo

Ariana Grande’s ‘Wicked’ Vocal Coach Reveals She Helped Other Actresses Prep For Glinda Audition

In the true spirit of Glinda the Good, Ariana Grande gave other actresses the resources to be ‘Popular’ at their Wicked audition. The Oscar nominee’s longtime vocal coach Eric Vetro revealed that she ...
AOL

Ariana Grande Helped Other Stars Prepare to Audition for Glinda in “Wicked”, Reveals Her Vocal Coach Eric Vetro (Exclusive)

"She actually encouraged some of the other girls and said, 'You really should go see Eric and work on it with him,'" he says Grande, 32, worked with Vetro, 69, to prepare for her role as Glinda in ...