Question: Björn Ulvaeus was a part of a Swedish pop group, formed in Stockholm in 1972, as well as co-producer on the film "Mamma Mia!" with who?
Sentence (from "Super Trouper (song)"): The song – with lead vocals by Anni-Frid Lyngstad – had the working title "Blinka Lilla Stjärna", and was the last track to be written and recorded for the album (ultimately replacing the track "Put On Your White Sombrero").
Relevant evidence: No