Casting principal
Lainy Boyle
Anni-Frid Lyngstad (younger)
Siobhan Hewlett
Agnetha Fältskog (younger)
Jo-Anne Stockham
Agnetha Fältskog (older)
Christina Balmer
Anni-Frid Lyngstad (older)
Paul O'Neill
Björn Ulvaeus
Tracy-Ann Oberman
Self-Narrator (voice)
Agnetha Fältskog
Self (archive footage)
Mikael Andersson
Self - ABBA archivist