3: Songs by artists who found their fame on a TV talent show.
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This Week's Chart By Numbers (15th March 2015)

5. 3: Songs by artists who found their fame on a TV talent show.
Can you name all three? No? Okay, it's Olly Murs with 'Up', Kelly Clarkson with 'Heartbeat Song' and G.R.L with 'Lighthouse'.