Veterans the Beach Boys and Bryan Ferry, new star Will Young and Australian Pink Floyd Show tribute band are four acts booked for a new summer festival.
Young has enjoyed a successful career since winning Pop Idol
The four-day Summer Pops is another boost for the Faenol Estate, near Bangor, after the success in recent years of the Faenol Festival - brainchild of Welsh opera star Bryn Terfel.
The outdoor festival will be held from Friday 9 July to Monday 12 July and hopes to attract up to 25,000 people a night.
A spokesman for promoters CMP Entertainment said: "Bryan Ferry has been at the top of his trade for 30 years.
"The Beach Boys are absolute legends. Will Young is one of the hottest tickets in town at the moment and The Australian Pink Floyd Show sell out arenas all over the world.
"And we are hoping the festival will be a success in the amazing Welsh countryside."
The Beach Boys were one of the biggest groups of the 1960s, with a string of hits including Surfin' USA, Good Vibrations and God Only Knows.
The Beach Boys during their heyday as one of the world's top bands
Their 1966 album Pet Sounds is widely regarded as one of the most finest albums in rock history.
Bryan Ferry enjoyed worldwide fame as the lead singer of avant-garde 1970s rock band Roxy Music before establishing a solo career.
Will Young shot to stardom after winning the inaugural Pop Idol competition and is in the running for 2003's best song at next month's Ivor Novello songwriting awards with Leave Right Now.
The Faenol Estate's managing director Sean Wood welcomed the news: "This will have a great impact on restaurants, B&Bs and the area.
"It is also another event which reinforces Faenol's role as a large outdoor venue."