West got his big break in the year 2000, when he began to produce for artists on Roc-A-Fella Records. West came to achieve recognition and is often credited with revitalizing Jay-Z's career with his contributions to the rap mogul's influential 2001 album The Blueprint. The Blueprint is consistently ranked among the greatest hip-hop albums, and the critical and financial success of the album generated substantial interest in West as a producer. Serving as an in-house producer for Roc-A-Fella Records, West produced records for other artists from the label, including Beanie Sigel, Freeway, and Cam'ron. He also crafted hit songs for Ludacris, Alicia Keys, and Janet Jackson.

What label did Kanye begin to work for in 2000?