Frid ‘Frida' Synni Lyngstad, former members of the Swedish pop group ABBA, stand by caricature puppets used in a music video, at the AbbaWorld exhibition in Earls Court London, Tuesday. The spangly Swedish quartet that gave the world “Waterloo” and “Dancing Queen” has sold 400 million records since its 1970s heyday and spawned the hugely successful stage and film musical “Mamma Mia!” And now there's ABBAWORLD - a new museum-cum-theme park in London with enough music, mementoes and memory-lane appeal to satisfy even the most fervent ABBA fan.The exhibition tells the band's story in 25 rooms spread over 30,000 square feet (2,800 sq. meters). Glass cases contain spangly costumes in silk, satin and spandex.