Tiffany Young sang an a cappella, bilingual rendition of the song ‘For Good’, from the popular stage musical Wicked.In a new video interview with Elle Korea, the Girls’ Generation member opened up about the stage musical roles she would like to play after her successful run as Roxie Hart in the South Korean production of Chicago. The singer named Glinda the Good Witch from Wicked (originated by Kristin Chenoweth) as the role that she hoped to tackle next.Young then launched into an impromptu, partial rendition of ‘For Good’, in both English and Korean, from the long-running musical, before recalling her emotional experience watching the production.