For the first time I go to La Scala, for each thing, for each rehearsal, my knees were shaking. But the audience was very fine with me.

I never, never thought one day I will sing at La Scala or I will get the Grammy. I'm lucky. I work a lot with a teacher, with my coach.

I play golf, and I play chess, and sometimes I go to the gym. On the airplane or between acts when I do the performance, I play Candy Crush to forget what happens around me, just to be alone, not thinking... You need to clear your brain.

First time I walked out on the Opry stage, Vince Gill was there. He kind of 'daddied' me through the whole thing. My knees were knocking. I walked out there, and I was literally shaking. They say it's the spirits or the ghosts. And out of respect for that whole establishment, I was really really nervous.

I remember the first time I walked on that stage. Maxine and I were just a duet at the time, and we walked on that stage and did 'Looking Back to See.' Ernest Tubb introduced us at the time. I remember my knees were shaking.

I could hear my friends outside playing soccer while I was expected to stay inside practicing the piano. It was like torture!