Initially intended to be an EP, Watch the Throne -- from rap superstars Jay-Z and Kanye West, aka the Throne -- took on a number of forms prior to its release as a full-length album. Nailed down during January 2011 sessions at Mercer Hotel in New York City, the aggressive and boast-heavy set features vocal appearances from Beyonc?, Frank Ocean, and La Roux's Elly Jackson, as well as writing and production assistance from the likes of Swizz Beatz, the Neptunes, the RZA, Om'Mas Keith, and Terius "the-Dream" Nash.