Who sings this song?
Girl 1.   I really like this song.  I do, too.
It sounds really good.  Who sings this song?
Girl 2.  I don't know.
Girl 1.  I can ask Dan.  Hey, Dan, who sings this song?
Boy.  This song?  It's a very famous song.
Girl.  I know.  Who sings this song?
Boy.  Uh...I'm not sure.
Girl 1. 2.  Ahh! - Who sings this song?!