Oh, God. I wish I could write all of them...let's see. The one I really want is: My Songs Know What あなた Did in The Dark (Light Em Up). Here Comes the Sun for a Beatles tribute. This Love, Breakaway, I Write Sins Not Tragedies, and One 日 Too Late, sung によって Rachel about Finn
Just Give Me A Reason によって Pink, When It Rains によって Paramore, How To Save A Life for Finn, Clocks によって Cold Play, Buy Me 愛 for the tribute -very unlikely to happen.