The album was inspired by The Grey Album by Danger Mouse, which was a mash-up album between Jay-Z and The Beatles. MTV had originally planned on mashing up only one or two songs, but the project was eventually expanded to a six-song album. The production on the album was mostly handled by Mike Shinoda and Jay-Z, and it was recorded between July 16 and July 19. The album spawned one single, "Numb/Encore" which won Best Rap/Sung Collaboration at the 48th Grammy Awards. The album received generally mixed reviews from music critics but despite that was a commercial success. It debuted at number one on the US Billboard 200 chart, selling 368,000 copies in its first week.[5]