TO GO WITH A STORY BY Camille BAS-WOHLERT ABBA's sign is seen during the press viewing of world's first permanent ABBA museum, on May 6, 2013 in Stockholm, on the eve of the official opening. The group dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND

TO GO WITH A STORY BY Camille BAS-WOHLERT Benny Andersson, member of Swedish disco group ABBA, poses at the world's first permanent ABBA museum, on May 6, 2013 in Stockholm, on the eve of teh official opening. The group dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND

TO GO WITH A STORY BY Camille BAS-WOHLERT Benny Andersson, member of Swedish disco group ABBA, poses at the world's first permanent ABBA museum, on May 6, 2013 in Stockholm, on the eve of teh official opening. The group dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND

TO GO WITH A STORY BY Camille BAS-WOHLERT Benny Andersson, member of Swedish disco group ABBA, poses at the world's first permanent ABBA museum, on May 6, 2013 in Stockholm, on the eve of teh official opening. The group dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND

TO GO WITH A STORY BY Camille BAS-WOHLERT Owe Sandstom, designer of many of Swedish disco group ABBA's stage and video costumes, poses at the world's first permanent ABBA museum, on May 6, 2013 in Stockholm, on the eve of teh official opening. The group dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND

TO GO WITH A STORY BY Camille BAS-WOHLERT Benny Andersson, member of Swedish disco group ABBA, poses at the world's first permanent ABBA museum, on May 6, 2013 in Stockholm, on the eve of teh official opening. The group dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND

TO GO WITH A STORY BY Camille BAS-WOHLERT Owe Sandstom, designer of many of Swedish disco group ABBA's stage and video costumes, poses at the world's first permanent ABBA museum, on May 6, 2013 in Stockholm, on the eve of teh official opening. The group dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND

TO GO WITH A STORY BY Camille BAS-WOHLERT Owe Sandstom, designer of many of Swedish disco group ABBA's stage and video costumes, poses at the world's first permanent ABBA museum, on May 6, 2013 in Stockholm, on the eve of teh official opening. The group dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows a room at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows part of the recording room at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows part of the recording room at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows a room at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows a man singing karaoke with mannequins representing ABBA members, at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows a visitor at the golden room, featuring golden records, at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows the golden room, featuring golden records, at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows the golden room, featuring golden records, at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows the golden room, featuring golden records, at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

TO GO WITH A STORY BY Camille BAS-WOHLERT This picture taken on May 6, 2013 in Stockholm shows a visitor at world's first permanent ABBA museum, on the eve of the official opening. Swedish group ABBA dominated the 1970s disco scene with their catchy melodies and kitsch dance routines. AFP PHOTO / JONATHAN NACKSTRAND RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION

La ex integrante del grupo ABBA, Annifrid Reuss-Lyngstad, llega a la inauguracion del Museo ABBA en el Salon de la Fama de la M?sica Sueca en Estocolmo, Suecia, el lunes 6 de mayo de 2013. El museo se inaugurar? al p?blico el martes con objetos, videos y vestuarios del grupo. (Foto AP/Scanpix Sweden/Jonas Ekstromer) SWEDEN OUT

El ex integrante del grupo ABBA, Benny Andersson, llega a la inauguracion del Museo ABBA en el Salon de la Fama de la M?sica Sueca en Estocolmo, Suecia, el lunes 6 de mayo de 2013. El museo se inaugurar? al p?blico el martes con objetos, videos y vestuarios del grupo. (Foto AP/Scanpix Sweden/Jonas Ekstromer) SWEDEN OUT