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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It will be a dry and fine day across the country with plenty of warm sunshine and light winds.