The legendary pop group will start celebrations of their 50th anniversary as a band at the event when the surviving members of the their classic line up - Brian Wilson, Mike Love, Al Jardine, Bruce Johnston and David Marks - take to the stage together for the first time in over 20 years.
As well as going on tour later this year, the band are planning to make a new album.
Speaking of the group getting back together, Brian said: "This anniversary is special to me because I miss the boys and it will be a thrill for me to make a new record and be on stage with them again."
Al Jardine added: "From our humble beginnings as brothers, cousins and friends, we have been honoured to sing the praises of California, and I'm really excited for our fans to be able to see us again in concert on the world stage."
The Grammy Awards take place at the Staples Center in Los Angeles this Sunday (12.02.12) with performers including Adele, Chris Brown, Deadmau5, Foo Fighters, David Guetta,Lil Wayne, Bruno Mars and Sir Paul McCartney.