It tests players' acting or singing skills, but besides awarding them a score, it gives participants a shot at making it big: talent agents will be in touch if you perform particularly well.

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Just look at JLo she went from back up dancing, to acting, to singing, to talent judging to dating a backup dancer talk about life going full circle.

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All four say one of the biggest things they've had to work on is not the dancing or singing or acting but trying to stay in glum character and not smile even as hundreds of people in the theater erupt with laughter.

WSJ: The 4 girls who play 'Matilda' bond offstage

Peking opera is a performance art incorporating singing, reciting, acting, martial arts.

UNESCO: Intangible Cultural Heritage

The California native served in the U.S. Navy in World War II and tried his hand at singing before moving to acting, according to the Internet Movie Database.

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In 1993, Justin was singing, dancing and acting in the Disney Channel's "The Mickey Mouse Club" alongside a group who would later become a who's-who of teenage idols, including Ryan Gosling, Cristina Aguilera, J.

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"Bawden's acting, her comic timing, singing, dancing and stage presence were all faultless and earned her - and her more famous main man - a joyous standing ovation on a buzzy, exciting night at the Crucible, " he wrote.

BBC: Dominic West and Carly Bawden on song in My Fair Lady

And when you do a musical like that, you usually doing about two weeks of dancing, two weeks of singing, two weeks of acting.

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Changing a whole way of thinking, speaking and acting is difficult, when everyone around you seems to be singing the same song.

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