Actor says he's been "messing around" in the studio with Yeezy
The rapper's girlfriend Kim Kardashian posted the picture on Instagram
Meanwhile, the rapper last night (May 18) performed new tracks 'Black Skinhead', 'New Slaves' on SNL
Promo footage screened on 66 landmark buildings across the globe
Rapper rants about his celebrity at Adult Swim party
Travi$ Scott has heard rapper's new LP and says it's 'next-level' stuff
Source says 'X Factor' judge has lofty ambitions to work with rapper
Scottish producer has worked with West on upcoming album
Rapper lets rip a torrent of expletives at paparazzi
Rapper spotted filming fight scene alongside Tina Fey and Amy Poehler