In August 2007, Monáe debuted with the first of four planned Metropolis installments, or suites, an EP entitled The Chase, a concept piece revolving around a character named Cindi Mayweather and the year 2719. The album -- which melded cabaret, hip-hop, rock, and soul -- was well received, which helped bring the singer into the radar of Sean "Diddy" Combs. Rumors about a signing were finally confirmed in March 2008, when Diddy announced Monáe as the newest member of his Bad Boy roster. Monáe promised that the move was not going to compromise any of her artistic integrity or creativity. A re-release of The Chase, featuring bonus content, appeared in August 2008. The second and third suites of Metropolis were issued together as components of The ArchAndroid, released in May 2010. It debuted at number 17 on the Billboard 200 and was nominated for a Grammy in the category of Best Contemporary R&B Album. "Tightrope" was nominated for Best Urban/Alternative Performance. Additional Grammy nominations came in 2013 for her guest appearance on Fun.'s "We Are Young." September 2013 brought The Electric Lady. Billed as suites four and five, it featured guest appearances from Prince, Erykah Badu, Esperanza Spalding, Solange, and Miguel.