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23 April 2013, 14:13
The artists are among the latest set of names to be included on the bill for this year's event.
Lawson are among the latest names to be added to the line-up for this year's T In The Park Festival.
The 'When She Was Mine' stars will take to the stage at the Scottish event – which is headlined by Rihanna, Mumford & Sons and The Killers.
The group also confirmed the news on Twitter stating they were excited to be joining the bill.
"#TITP2013 Looking forward to seeing you there @Tinthepark!!" they wrote.
Other names also joining the line-up include former X Factor winners Little Mix and James Arthur as well as US singer Ke$ha.
Former The Voice contestant Bo Bruce will also now be appearing at the festival.
The T In The Park Festival 2013 will take place in Balado, Scotland over the weekend of the 12-14th July.