The name "ABBA" is an acronym formed from the first letters of each of the group members' given names (Agnetha, Bjorn, Benny, Anni-Frid), and the group took this name officially in late 1973. The group's name is officially trademarked with the first "B" reversed ( 25px ), so that the left and right halves of the name are mirror-images of one another.
ABBA gained international popularity employing catchy song hooks, simple lyrics, sound effects (reverb, phasing) and a Wall of Sound achieved by overdubbing the female singers' voices in multiple harmonies. As their popularity grew, they were sought after to tour Europe, Australia, and North America, drawing crowds of ardent fans, notably in Australia. Touring became a contentious issue, being particularly unpopular with Faltskog, but they continued to release studio albums to great commercial success. At the height of their popularity, however, both relationships began suffering strain that led ultimately to the collapse of first the Ulvaeus-Faltskog marriage (in 1979) and then of the Andersson-Lyngstad marriage in 1981. In the late-70's/ early 80's these relationship changes began manifesting in the group's music, as they produced more thoughtful, introspective lyrics with different compositions.
ABBA remains a fixture of radio playlists and is one of the world's best-selling bands, having sold nearly 370 million records worldwide, making them the second best-selling band in history and the second best-selling pop artists in history. They still sell two to four million records a year. ABBA was also the first pop group from mainland Europe to enjoy consistent success in the charts of English-speaking countries, including the United Kingdom, the United States, Canada, Ireland, South Africa, Rhodesia, Australia and New Zealand. Their enormous popularity subsequently opened the doors for other Continental European acts.
The music of ABBA has been re-arranged into the successful musical Mamma Mia! that has toured worldwide and had a movie version released in July 2008 (one of the highest grossing films in the UK). All four of the former members of ABBA were present at the Stockholm premieres of both the musical (2005) and the film (2008). The film premiere took place at the Benny Andersson-owned Rival Theatre at Mariatorget, Stockholm on 4 July 2008. A new museum devoted entirely to the pop supergroup was scheduled to open in Stockholm in 2009, but the project was postponed as of September 2008.
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