How Long Charlie Puth Download 'How Long' on iTunes
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Hit Music Maths: Do You Know Your Pop Numbers?
Rihanna's 'Loud' tour was her most successful to date, with the Barbadian singer performing in 20 countries in support of her fifth studio album. The production grossed $90 million from 1,200,800 ticket sales. But how many shows did Rihanna perform throughout the year?