The Best of Both Worlds is the first collaborative album by American singer R. Kelly and American rapper Jay-Z. It was released on March 19, 2002, through Jive Records, Roc-A-Fella and The Island Def Jam Music Group. The album was produced primarily by R. Kelly and Poke and Tone, with additional production by Megahertz and Charlemagne. The album features guest appearances by Beanie Siegel, Lil' Kim, and Devin the Dude.