Machine Gun Kelly‘s new album is full of surprises. 
After the “Wild Boy” rapper, 31, released his sixth studio album Mainstream Sellout on March 25, fans immediately noticed the cameos on “Wall of Fame (Interlude).” Both MGK’s BFF Pete Davidson, 28, and his 12-year-old daughter Casie—who he shares with ex Emma Cannon—contributed to the song.

What’s the wall? “What’s this wall?” Saturday Night Live star asks on the track, as Casie yells, “We love the wall!”

Pete said, “It is a wall full of famous people?” Wow. … L.A. sucks.” Casie questions if her father is on the wall and the comedian repeats her question in a jokey tone, asking, “Are you on the wall, daddy?”

MGK informs his daughter about the incident and she agrees. King of Staten Island actor that he is on the wall, to which his BFF replies, “Oh, well, that’s cool. ‘Cause I didn’t see that I was on the wall and I’m a little jealous. The wall is a little boring to me, but it’s my dream. That makes sense. However, the following song should be a hit. Machine Gun Kelly’s album is available.