Producer Mike Will Made It has revealed that Miley Cyrus's part on his track '23' wasn't planned and just happened while they were in the studio.

The urban cut, which also features Wiz Khalifa and Juicy J, definitely wasn't intended to include the former Disney starlet and Mike Will (pictured left and below with Cyrus) confessed that he initially had reservations about letting her record vocals for the song. He told MTV News:

"I already had Juicy J and Wiz on there, and then we were working on 'We Can't Stop,' and I had a verse on there that was already laid down, but I wanted a girl to do it. But I didn't know who I was going to do it with, and this was first day meeting Miley, and we had just knocked out 'We Can't Stop.' And then I let her hear it, and she told me she liked it."

He continued: "She told my engineer, 'Turn the mike on,' and she went in the booth, then she laid down the verse, and she killed it. [So I] left her on there. She killed it, all swagged up."