Eminem and Shady Records announced a partnership with Genius today (November 4), per a press release.

“Coming up we would always obsess over the lyrics from our favorite MCs. Picking everything apart, trying to get into their heads,” Eminem says in the press release. “I still do that today and Genius helps to make it a worldwide conversation. Pretty amazing to me.”

Eminem is set to continue annotating his music on Genius, which will now be the official lyrics engine for the rapper’s website and the online properties of his imprint.

“Any discussion of the greatest rapper of all time has to include Eminem, so working with him and Shady Records is just incredible as a fan,” Ilan Zechory, Co-Founder and President of Genius says. “With Genius we’re trying to create something like a museum of songs — we want to give all the great ‘behind the music’ stories from Eminem a permanent home for fans to enjoy.”

In April, Eminem made 42 annotations on the site.

Nas is also an investor in and owner of Genius.

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