I took it in the summer 2011 with Simon and found that as long as you weren't sleeping in class, if you were taking notes, you'll be fine. Memorize everything from the notes, listen through and know the WHOLE song (he takes a small segment from anywhere, usually somewhere significant but won't contain the name of the song) and the material from the assigned readings. There's usually like 2 questions from the assigned readings. 3 songs for the midterms (4 on the final) and for the songs, he'll ask 3 questions about the one song (total of 9 questions) and he will ask you about the date, who sang/wrote it, what era does the song come from, any significant details about the song that he mentioned in class. If he didn't mention a detail about the song in class, you won't need to know it. So don't bother wiki-ing everything you find about the one song.
It was fun listening to songs and studying! Good luck!
Edit: You will
need to know the form chart. It was tested in my midterm and seems like it's an important topic that he'll probably test again.