ABBA, the Swedish foursome supergroup which have not performed in public since 1986, reunited at the Stockholm Mamma Mia! film premiere on July 4, 2008, for the first time in 22 years. All four ABBA original members - Benny Andersson, Björn Ulvaeus, Anni-Frid Lyngstad - known as Frida - and Agnetha Fältskog attended the event. The soon-to-be released film Mamma Mia! features 22 ABBA songs including Dancing Queen, Money, Money, Money and Take a Chance on Me.