The upbeat song has a number of musical references to old school 80s hip-hop, including the pounding drumbeats and crunchy guitars which are Rick's signature style.
The song samples both Beastie Boys' 'Fight For Your Right To Party' and Billy Squier's 'The Stroke'.
In the track Eminem references his alter ego, Slim Shady, and older hip-hop artists rapping: ''Let's bring it back to that vintage Slim, bitch / The art of the MCing mixed with da Vinci and MC Ren / And I don't mean Stimpy's friend, bitch / Been Public Enemy since you thought PE was gym, bitch.''
'The Marshall Mathers LP II' is the sequel to Eminem's third album, released in 2000, which is his most successful to date.
Eminem - whose real name is Marshall Mathers - had previously been quiet about his comeback, which his friend and Slaughterhouse collaborator, Royce Da 5' 9'', suggested was to retain an air of mystery.
He previously said: ''Em's whole thing is the element of surprise. That's how it's always been with him.''
Here are all the performances from the comeback series of 'Twin Peaks'.
He's embarking on his first ever solo arena tour.
The singer has donated half a million to relief efforts.
Pratchett died aged 66 in March 2015.
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