In 2010, he was discovered by Axwell, a member of the electronic dance music trio Swedish House Mafia. He then recorded vocals and co-wrote for the group's song, "Save the World". The song reached No. 10 in the UK singles chart and peaked at No. 1 on the Hot Dance Club Songs in the United States.
Don’t you worry child was released in September
2012 - and was written and sung by John Martin.
It sold over 3 Million copies worldwide.