I gave a friend some Celestial Seasonings (the brand name) "Throat Soother Tea," and she gave it to her husband who is a music producer. He now keeps it in his studio for any performers who develop sore throats. It doesn't make it go away entirely, but it does lessen the pain. It does exactly what it says--soothes the throat. They swear by it.

I agree with Alice, avoid sugar. (I wouldn't avoid mint, though--it can do wonders to soothe an upset stomach).

SRS