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Did you hear that? It's a persistent noise ringing loudly mentally. So much that it is disruptive and might keep you from finding a sound night of sleep. Living in major cities, partying as being a rock star, pumping the volume on MP3 players and working in environments with higher than normal numbers of noise contributes to one's risk ring ears for developing tinnitus.

http://www.youtube.com/watch?v=3h_QI2ConZ8