What do Timothée Chalamet , Ariana Grande, Sabrina Carpenter , Addison Rae , and Blackpink's Rosé have in common? They're all nominated for Grammy Awards this year, and they've all worked closely with the same vocal coach: Eric Vetro . In an industry that runs on pomp and publicity, Vetro is the man behind the curtain shaping the voices of some of Hollywood's biggest stars. Over the decades, his A-list roster has grown largely by word of mouth, with happy students across all genres recommending