Rap duo Bars & Melody, featuring 13-year-old Leondre Devries from Port Talbot, are in Cardiff to mark the release of the their debut single.
Leondre Devries from Port Talbot and Charlie Lenehan from Bristol, reached the final of the ITV talent show Britain's Got Talent earlier this year.
Our reporter, Emily Gadd, is in Cardiff and sent this picture of fans queueing to see the boys.
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Prime Minister Theresa May announced the decision from Downing Street.
A fairly cloudy night to come with hill and coastal fog lingering in places. This could be thick enough for the odd spot of drizzle.
Father-of-three Nick Bickerstaff, from Denbighshire, was waiting for daughter Ellen and her friend in the foyer at the end of the concert.