The whistle I have in my left ear started after I had had micro suction about two years ago to remove ear wax. I also felt as if my ears had become more sensitive, everything was now too loud whether playing or watching bands. The foam or silicone plugs I had been using were no longer effective. I went to Specsavers for custom moulded plugs, Elacin Er25s, and wished I had done it years ago. I never really liked putting plugs in my ears, they sometimes made me feel nauseous, but I don't know the Elacins are in. I am never without them now, I can still hear conversation with them in but when the band kicks off it is like standing outside. Money well spent.