JONATHAN NACKSTRAND/AFP/Getty Images
ABBA costumes and records are seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013. The museum will show off band paraphernalia, including the helicopter featured on the cover of their "Arrival" album, a star-shaped guitar and dozens of glitzy costumes the Swedish disco group wore at the height of its 1970s fame.
JONATHAN NACKSTRAND/AFP/Getty Images
ABBA costumes and records are seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
AP Photo/Scanpix Sweden/Janerik Henriksson
Bjorn Ulvaeus, former member of the Swedish music group ABBA, is photographed during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
Puppets of ABBA members are seen at a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
ABBA memorabilia is seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
ABBA memorabilia is seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
ABBA memorabilia is seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
Visitors attend a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
Part of a recording room is seen at a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
Part of a recording room is seen at a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
ABBA memorabilia is seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
A man sings karaoke with holograms of ABBA members during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
JONATHAN NACKSTRAND/AFP/Getty Images
The helicopter featured on the cover of ABBA's "Arrival" album is seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
AP Photo/Scanpix Sweden/Janerik Henriksson
Bjorn Ulvaeus, former member of the Swedish music group ABBA, poses for photographers during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
(AP Photo/Scanpix Sweden/Jessica Gow
Posters and photos of Swedish music group ABBA are seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.
Jessica Gow
ABBA memorabilia is seen during a press preview of "ABBA The Museum" at the Swedish Music Hall of Fame in Stockholm, Sweden, on May 6, 2013.