Rapper Eminem on Thursday released a surprise album ‘Music to Be Murdered By — Side B,’ a companion to his 11th studio album, ‘Music to Be Murdered By,’ reported CNN.

The multiple Grammy-winner has produced the album with  longtime collaborator Dr Dre, and features DJ Premier, Ty Dolla $ign and Sly Pyper.

Among the 16 new tracks, Eminem apologises to singer Rihanna in one of the tracks named ‘Zeus’. He apologised over a decade-old lyrics about Chris Brown that had leaked in 2019.

In the track, Eminem had rapped that he “sided” Brown after he pleaded guilty to felony assault involving Rihanna in 2009.

In ‘Zeus,’ Eminem raps, “But, me, long as I re-promise to be honest / And wholeheartedly, apologies, Rihanna. For that song that leaked, I’m sorry, Ri / It wasn’t meant to cause you grief. Regardless, it was wrong of me.”

Eminem has previously collaborated with Rihanna for a few songs, which includes ‘Love the way you lie’ and ‘Monster.’