Ariana Grande is pulling back the pink curtain on just how much it took to become Glinda.Sitting with Adam Sandler for Variety's Actors on Actors, published Dec. 5, the pop star-turned-sorceress revealed that Wicked: For Good filming stretched across five years and required daily voice retraining, plus a set of custom-built emotional "triggers" so she could cry on cue without digging into her personal history.When the Happy Gilmore actor asked him how long the filming was for both the Wicked movies, Ariana Grande revealed:"The whole adventure in total was... five years. Our auditions and the prep for the first audition was three months for me. I trained everyday. It was a long journey."The we can't be friends hitmaker continued, explaining her character from the movie series."Glinda has a very operatic voice, so there was a lot of retraining my voice. And also, I hadn't acted in a really long time. So I just wanted to work on my technique and figure out what would work for me."Ariana Grande shared with Adam Sandler that she trained under renowned acting coach Nancy Banks, whom she also credited as a "healer more than anything."Ariana Grande confesses she created emotional "triggers" to keep her own life out of WickedIn the same conversation, the singer-actress also discussed the emotional depth needed for her character as Glinda, while also noting that the movies' core was "adjacent" to her personal experiences. She told Sandler:"I'm a crier in life, but it's not as easy when you're performing. It's not a party trick. I invented triggers for Glinda so that I didn’t have to touch on my own, because certain themes in this film are so adjacent to my life. I had to design her pain so I didn't need to reference my own.""Wicked" New York Premiere - Source: GettyThe sophomore Wicked film picks up where it left off, when Elphaba (Cynthia Erivo) drifted apart from her friend Glinda and was defamed by those in Oz as The Green Witch of the West.According to Sandler, he was moved by the part when a Munchkin man was altered by Elphaba into the Tin Man, in an attempt to save his life from Nessarose Thropp's (Marissa Bode) spell."The film version made me realize something I've never thought of in my life. The reveal of the Tin Man. [The movie] lets you hear noises that were going on, pings and pangs, and then the Tin Man looking at horror in the mirror [over what he's become]. That was a painful moment.""Wicked: Part One" European Premiere - Arrivals - Source: GettyAriana Grande agreed, reacting to Sandler's insight:"It's a very painful moment and it’s performed beautifully. It's so important to see these humanising moments for these villains, these terrible people. That's the beautiful thing about Wicked, it shows how perpetrators of evilness were once victims themselves."