I thought world music was appropriate for the day.
Democracy can be messy, but according to the Wall Street Journal Historic Egypt Vote Starts Smoothly
I searched around and found music from one of Egypt's current popstars and the grand diva, plus a few sources you may find interesting:
Umm Kulthum Yara Mekawie and Ola Saad
Egyptian Pop Rock
Authentic Egyptian Music Is From The Streets
World Music News Network