ABBA is a Swedish group formed in 1972 in Stockholm. The group is composed of Anni-Frid Lyngstad, Björn Ulvaeus, Benny Andersson and Agnetha Fältskog. The name ABBA is an acronym of the first letters of each of their first names arranged in palindrome. The band started to make a name for themselves in Sweden in 1972/1973 with their first single "People Need Love" and their first album "Ring Ring". Their international breakthrough came in 1974 with the release of "Waterloo" which won the Eurovision Song Contest, allowing the group to become known worldwide.
ABBA became one of the most popular musical groups of all time, with hits like "Dancing Queen", "Mamma Mia", "The Winner Takes It All" and "Super Trouper" all reaching the top of the charts worldwide. The group has sold over 380 million albums worldwide, making it one of the best-selling groups in the history of popular music.
After being active for ten years, ABBA decided to take a break in 1982, with each member pursuing solo projects. Since then, the group has kept a low profile, turning down all offers of a reunion. However, in 2022, after a 40-year hiatus, ABBA announced that they would reunite for a new album and the presentation of the show-event ABBA Voyage.