Led Zeppelin legend Robert Plant and bluegrass singer Alison Krauss are the big winners at 51st Grammy awards, grabbing five prizes for their hit album collaboration Raising Sand, including album of the year.

I'd like to say I'm bewildered, Plant, 60, told the audience at the Staples Center after winning the coveted album of the year and record of the year with bluegrass icon Krauss.

In the old days we would have called this selling out, but it's a good way to spend a Sunday, According to reports, Plant said, his partnership with Krauss had opened his eyes to a new world of music.

It's been a wonderful time, added Krauss, 37, who has now won a staggering 26 Grammys in her career, a record for a female performer. The pair also won prizes for best country collaboration with vocals, best pop collaboration, and best contemporary folk or Americana album categories.

Other winners included rock band Coldplay, who won three awards, including song of the year; Adele, 20, from London won a pair including best new artist; and newcomer Duffy, who was honored for pop vocal album.