Amanda Seyfried Takes Singing Lessons as She's Campaigning for 'Wicked' Role Movie The 'Mamma Mia! Here We Go Again' actress is desperate to land her dream role of Glinda the Good Witch as she has been campaigning for five years in hopes to play the character. Apr 11, 2021 AceShowbiz - Amanda Seyfried has wanted to play Glinda the Good Witch in a movie adaptation of the musical " Wicked" for five years. Mank" star has revealed she sent director Jon M. Chu a clip of herself singing "Popular" from the show with the aim of landing the role. Speaking on Variety's " The 35-year-old actress has...