Question: are all of abba swedish?
Answer: ABBA (/ˈæbə/, Swedish pronunciation: [ˈabːa]) is a Swedish pop supergroup formed in Stockholm in 1972 by Agnetha Fältskog, Björn Ulvaeus, Benny Andersson, and Anni-Frid Lyngstad. ... During the band's main active years, it was composed of two married couples: Fältskog and Ulvaeus, and Lyngstad and Andersson.