Machine Gun Kelly recently spoke about working WrestleMania 28 and more. Here are the highlights…

On Being Scared to Perform at WM 28: "I realized I had to go out there, but I didn't want to. It was the scariest moment of my career," the rapper said. "That was the only time I've ever looked out onstage before going out and said to myself, 'I'm totally okay if I just quit right now, so I don't have to go out there and do this.'"

On Cena Giving Him Moonshine: Cena's the man. Nothing was fake with him. He was very cool and very up front. He would say "hey, I'm really stoked and I really like you". He was super appreciative throughout the whole process. We did that whole thing in Cleveland on Raw where he pulled me out of the crowd and into the ring. Right before he went out, he said "go in the crowd, I'm going to grab you". That was a last minute thing. It wasn't planned. He gave us some moonshine before we went out at Wrestlemania, too.

On Doing The WM Theme Song: "I woke up and saw a tweet. My label didn't even tell me. I saw that 'Invincible' was the theme song for WrestleMania, and I thought it was cool. But, to be honest, we didn't understand how big it was until we got to Miami. When we walked into the stadium, it was like 'holy s---, this is massive.'"