ABBA is a Swedish pop group formed in 1972, consisting of Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. Known for their catchy melodies, harmonized vocals, and timeless hits, ABBA achieved worldwide fame with songs like Dancing Queen, Mamma Mia, Take a Chance on Me, and Waterloo. They became one of the best-selling music acts of all time, dominating the charts throughout the 1970s and early 1980s. After disbanding in 1982, ABBA’s music continued to thrive, inspiring musicals like Mamma Mia! and enjoying a massive global resurgence. In 2021, they reunited for the album Voyage, marking a historic comeback after nearly 40 years.