Hi, I have a weird problem in my left ear. When I sing, It's like my left ear shuts off . When I listen to music, its find. Shuts off only when I sing. It started at the same time as a cold, so I took Tylenol for flu with Mucous relief but it didn't help. And I need to tell you that I sing in a band for living and my monitor is on my left side. So I thought my ear needed a break but, I ear absolutely great when I dont sing. Can you please help me ??