Everyone agrees that Lady Gaga sounded fantastic on Oscar night performing a medley of songs from The Sound of Music. Well, it turns out that performance wasn’t exactly effortless: the singer practiced for months and months to perfect her vocals.

The show’s executive producer Craig Zadan told Entertainment Tonight that Gaga “worked with a vocal coach every day for half a year to do that.” The show’s other executive producer, Neil Meron, added, “She’s the real deal. She can do anything. She said that if she pulls it off, it’s going to change the focus of her career and she pulled it off.”

Sound of Music star Julie Andrews told Access Hollywood of Gaga, “”I have always been a fan, but [the night of the Oscars] we bonded and now I have a new friend.”