Pharrell Williams In the Studio with Justin Bieber, Wiz Khalifa & More
Justin Bieber came through the studio to work with Pharell on Feb. 4.

Pharrell Williams may be hush, hush about upcoming projects -- such as his collaborative album with Lupe Fiasco -- but it's evident he's at work. Since the new year started Pharrell has been in the lab with more than ten artists that include Snoop, Dr. Dre, Ne-Yo, Wiz Khalifa and most recently, Justin Bieber and 'X-Factor' contestant, Astro.

'X-Factor's' Astro and Marcus Canty Sign To Epic Records

Aside from putting in studio time, the super producer is one of two music consultants for the 84th annual Academy Awards, alongside film composer and music producer Hans Zimmer. Expect to see, hear and read more of Pharrell as he preps his upcoming travel book, "Places & Spaces I've Been" and BBC's new line of boots and women's line (Billionare Girls Club)

Scroll through (above or below) and see who's stopped through the studio and laced tracks with Pharrell.

Photos: Pharrell In the Studio

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