I have Cingular, and you can choose a few of them to be your ring tone. I believe the options are "Wonderful", "Defying Gravity", "Dear Old Shiz", and "For Good". It depends on your wireless carrier.
If you go to 3gupload.com, you can turn any midi file into a ringtone. hamienet.com has all the Wicked ring tones. If you can program midi's, you can do whatever you want.
...and your children start to leave you from the moment they are born.