I have posted this advice before. Please go look at my June 6th post for details. My best and favorite classroom management tool has been the sets of CDs that I burned for my classrooms.
This bribe for good behavior always worked well for me.
As noted in my June 6th post, teachers will need to check the lyrics of songs their students choose. The odds that all those song lyrics will be appropriate for the classroom are probably only slightly greater than the odds that Santa Claus is a Martian.