As Beyonce lends her voice to "Epic," take a look at other singers who have also acted.
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Justin Timberlake, who got his start singing with the boy band 'N Sync, already had some TV experience from "The Mickey Mouse Club," but he started taking on more acting roles even after finding success as a solo artist. He had his first major role in the 2006 movie "Alpha Dogs" and built up some experience in movies like "Black Snake Moan" and "The Love Guru" before taking bigger roles in "The Social Network" (pictured) and "Bad Teacher" and then starring in "Friends with Benefits" and "In Time."