• Openly gay Elton John hugs "Rap God" singer Eminem after they performed the song "Stan" at the 43rd annual Grammy Awards.

Openly gay Elton John hugs "Rap God" singer Eminem after they performed the song "Stan" at the 43rd annual Grammy Awards. (Photo : Reuters/Gary Hershorn)

Eminem has collaborated with several artists including Sia, Rihanna, Nicki Minaj, Gwen Stefani, Akon, Jay Z, Pink, Kobe, Drake, B.o.B., Dr. Dre, Dido, 50 Cent, Obie Trice and Lloyd Banks, among others. However, the Detroit rapper is yet to collaborate with the following artists:

1.      Eminem-Miley Cyrus collaboration song

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Eminem dissed the "Wrecking Ball" singer in eight-minute freestyle in June. It will be interesting to see the "Rap God" rapper and Billy Ray Cyrus collaborated in a love song with a music video that becomes controversial because of having Eminem and Cyrus in it but features no violence and vulgarity at all.

2.      Eminem-Britney Spears collaboration song

Like Cyrus, Spears was also dissed by Eminem in his lyrics. A collaboration between this two artists will definitely be interesting.

3.      Eminem-Madonna collaboration song

In 2009, Madonna told Rolling Stone, "I wanted to work with Eminem. I don't think he wanted to work with me. Maybe he's shy."

It is not too late to make that collaboration song happen.

4.      Eminem-Demi Lovato collaboration song

In March, the "Cool for the Summer" singer told Entertainment Tonight that she would love to work with Eminem because she can relate to him.

5.      Eminem-Taylor Swift collaboration song

Like Madonna and Lovato, Swift has also expressed his interest in working with Eminem. A collaboration song with the "Rap God" rapper can be another milestone in her music career after shifting from country music to pop music.

6.      Eminem-Ed Sheeran collaboration song

The "Thinking Out Loud" singer has revealed that rapping to Eminem's songs helped him overcome his stuttering problem when he was a kid. He should collaborate with Eminem as a tribute to him.

7.      Eminem-Blake Shelton collaboration song

After Stefani, a collaboration song between Eminem and another "The Voice" season 9 coach is not unlikely.

8.      Eminem-Jason Mraz collaboration song

Something that Eminem fans will not expect is a collaboration song of the "Rap God" rapper and the "I'm Yours" hit maker.

9.      Eminem-Zayn Malik collaboration song

After leaving One Direction, Malik can expedite his launch as a solo artist by collaborating with Eminem.

10.  Eminem-Elton John collaboration song

Despite homophobia accusations, Eminem is friends with John, an openly gay musician. They have performed together but they have yet to seal their friendship with a collaboration single.