Blake Shelton has a laundry list, and not for his upcoming wedding, but for the artists he wants to record a duet with one day. Shelton's dream duet partner list widely varies and seems to keep growing. Surprisingly, one of the artists Shelton cited is quirky pop singer Katy Perry, and the country star says he would look forward to starring in a video opposite the 'California Gurls' songstress.

Shelton most recently has been in the studio with Brad Paisley, as he and Paisley are recording a duet for the 'Old Alabama' singer's new album, 'This Is Country Music.' Shelton has also recorded a song with Lionel Richie for the singer's upcoming duets album.

The country star has already worked with many artists on his dream duet list and says, "You know, I've got a lot of heroes, and several of them I've had a chance to record with. I've already had the chance to record with the Bellamy Brothers. And of course Trace [Adkins], I mean believe it or not, he is one of my heroes." He adds, "I would love to record with George Strait and Earl Thomas Conlee would be awesome."

Speaking of Conlee, Shelton's song from a few years ago, 'All Over Me,' fulfilled one of his dreams, as the country legend co-wrote the tune with Shelton. He says, "I think I made Earl a little uncomfortable when I met him, because I was such a fan, I probably asked him a million silly questions. But he's been my hero for so long that I couldn't help myself."

In fact when the country star met Conlee for the first time years ago, it was for a writing appointment at Conlee's house. In order to stay awake for the drive there, Shelton did not leave the house before helping himself to two pots of coffee. He jokes, "When I got to his house, the first thing I did after meeting him was ask him if I could use his bathroom. When I got in there the only thing I could think of was, 'I'm using Earl Thomas Conley's toilet!'"

The 'Hilbilly Bone' singer will open for Brad Paisley on his H20 II World Tour along with Darius Rucker and Jerrod Niemann, which kicks off May 28th at Heinz Field in Pittsburgh.  He and Reba McEntire will be co-hosting the ACM Awards on April 3, and Shelton has also been confirmed as the fourth and final judge for the new musical competition series 'The Voice,' which will debut April 26 on NBC.