Pharrell Williams smiles on stage
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#BBCtrending: Pharrell Williams 'humbled' by Happy success

Pharrell Williams has welcomed the release of the Iranians arrested for making a version of his hit Happy.

Speaking the BBC's Jo Whiley, he called the incident in Iran "super heavy", and added: "I'm happy they were released."

Pharrell Williams' Happy has been watched more than 250 million times on YouTube, and has inspired thousands of re-makes around the world.

Asked about the success of Happy he said: "It was humbling for me, and it warms my heart."

You can hear the full interview with Pharrell Williams on Radio 2 with Jo Whiley on 14 June