Complex sentence: On January 17,1999, Lauper appeared as an animated version of herself in "The Simpsons" episode "Wild Barts Can't Be Broken", singing the National Anthem to the melody of "Girls Just Want to Have Fun".
Split into simpler sentences: On January 17,1999, Lauper appeared as an animated version of herself in "The Simpsons" episode "Wild Barts Can't Be Broken". In the episode, Lauper sings the National Anthem to the melody of "Girls Just Want to Have Fun".