Manic Street Preachers' James Dean Bradfield is set to play at a fundraiser gig in the Rhondda to raise money for flood victims.
Valley Aid was set up after hundreds of Welsh residents were forced out of their homes following heavy and prolonged rain brought on by Storm Dennis.
James Dean Bradfield will perform three songs and auction his guitar at the event being held at live music venue The Pop Factory in Porth.
The Manics star will be joined by singer-songwriter Amy Wadge, who has co-written some of Ed Sheeran's hit records including 'Thinking Out Loud.'
Amy Wadge moved to Wales nearly 25 years ago and attended the Royal Welsh College of Music and Drama.
Sharing a video of flooding in Rhondda Cynon Taf, one of the worst-hit areas in the UK, she said it was "heartbreaking" to see the devastation.
Wadge donated £1000 to a fundraiser set up by two Welsh MPs for flood victims in Pontypridd, which has raised nearly £30,000.
Motörhead's Phil Campbell, who lives in the affected area, has also donated a signed guitar to be auctioned.
Another benefit concert will be held for Clwb y Bont, a live music venue in Pontypridd that was badly damaged by flooding. Bryn Fon and Band and Huw Chiswell have been announced as acts.
Huw Chiswell said: "I have wonderful memories of singing and socialising in Clwb y Bont and experiencing the warm welcome of the valleys on each occasion.
"It’s such an important location to the welsh language culture of the area and I consider it an honour, following on from the flooding damage to the Club that I can contribute towards the re-building of it."
The announcement comes after Manic Street Preachers donated £3000 to the Pontypridd flooding relief fundraiser.
Other Welsh names have come forward in support of the flood-hit communities of south Wales.
Hollywood actor Michael Sheen launched a crowdfunding campaign that has raised more than £54,000.
Rugby referee Nigel Owens offered to give flooded rugby clubs signed jerseys for them to auction off.
Rugby pitches and clubhouses across south Wales were hit by rising flood waters, with Cross Keys and Bedwas RFC seeing some of the worst damage.
Partners Merthyr Tydfil-born producer and actor Jonny Owen and Nottingham-born actor Vicky McClure also donated £500 to the Pontypridd fundraiser.
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