Funny you mention that Matias. Actually I had this problem last week and I had to sing on the weekend, I am still somewhat with some problem in my throught (maybe strip throught). I started on the antibiotics two days before my gig, that barely got me going, but what I did is transposed my keyboard to -2 so that I dont have to push myself, and believe me I still felt like it was +2 instead! Hopefully I will be much better for this coming weekend. I personally am thinking to take my tonsels (sp?) out cause they swell and give me feaver at least 3-4 times a year, its not worth it.