The Darkness will headline the Steelhouse Festival on Sunday July 24.
They are joined in the first tranche of bands to be confirmed by Von Hertzen Brothers and Hand Of Dimes. Other acts will be announced over the coming weeks.
However, fans will have to wait until February 20 for the identity of the Saturday night headliner to be revealed.
Steelhouse Festival takes place at Hafod-y-Dafal Farm, just outside Ebbw Vale in south Wales over the weekend of July 23/24.
Tickets are on sale from the official website.