In 2010, when he was sixteen years old, Harry auditioned for the seventh season of The X Factor.
He wanted professional opinions on his singing, stating "Singing is what I want to do, and if people who can make that happen for me don't think that I should be doing that, then it's a major setback in my plans." Harry sang "Isn't She Lovely" and received positive comments from Simon Cowell and Nicole Scherzinger, while Louis Walsh had doubts on whether he was ready to progress in the competition.
It was a global success, debuting at #1 in many countries.
On April 28, 2017, Harry announced a world tour, commencing in September and concluding in December 2017.
Harry dated Felicity Skinner for a year, when both were 15 years old.
Grande performed the song with Coldplay's Chris Martin at the 2015 Global Citizen Festival.
He later announced a larger arena tour would commence in April 2018. The film was a box office success and Harry received positive reviews for his role.
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At bootcamp, Harry sang "Stop Crying Your Heart Out" before being eliminated as a solo artist then placed into One Direction.
After placing third in the competition, One Direction signed a recording contract with Simon Cowell's Sony Music subsidiary label, Syco Music.