The 2013 Grammy nominations were announced last night [December 5] and it was a good night for hip hop and R&B. Rap kings Jay-Z and Kanye West shared the Grammy spotlight with a familiar collaborator, Frank Ocean, as all three music stars took home six Grammy nods each. Rock band Mumford & Sons joined them to make it a four-way tie. Coming up with five nominations of his own was Miguel, who's smash single "Adorn" is up for Song of the Year.

While Jay-Z and Kanye West will do battle for hip hop supremacy against acts like Nas and Drake, Frank Ocean will pit his genre-bending talents against alternative acts like the Black Keys and Jack White when his debut album, Channel Orange, contends for Album of the Year.

The 55th annual Grammy Awards air Sunday, February 10, on CBS.The 55th annual Grammy Awards air Sunday, February 10 on CBS.

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