After the anticipated release of his twelfth studio album, Beck will headline the independent festival in Portmeirion on Saturday 6 September.
Brit nominees London Grammar, who have risen to chart success in under a year with their platinum-selling album If You Wait, will join Beck as headliners, with a third headline act due to be announced shortly.
Motown legends Martha & the Vandellas, Nineties pop icon Neneh Cherry, and Simon Green, better known as Bonobo, join the line-up for the three-day festival.
Other confirmed live acts include Jimi Goodwin, Temples, Steve Mason, James Holden and Los Campesinos!
House DJ Julio Bashmore will be heading the electronic arena, with two other headline acts yet to be announced.
He will be joined by Andrew Weatherall, Danny Krivit and Michael Mayer, along with a number of other DJs.
The music acts will be performing across the site, set against the historic Italiante architecture of Portmeirion.
The arts and culture line-up, which last year included speakers Caitlin Moran and John Cooper Clarke, will be announced shortly.Reuse content