Wii Guitar Hero Microphone - where do we buy one?

OK all you wii lovers out there

I bought OH Guitar Hero for his birthday, Guitar Hero 5, and I am hopeless, now I am hopeless at singing too, BUT it can't be any worse than my inability to play GH

So I think you can buy a microphone but OH asked in Game HMV and Game Station today who all said no you can't the only way to get one is to get the whole Band Hero Pack

So looked at Amazon and Ebay and there are a couple BUT when you read the reviews on Amazon it says things like "very dissapointed doesn't work" and "won't work with Guitar Hero" etc etc

So my question is do you get such a thing as GH mic for wii and if so where?

i could be wrong but you can get a game for the wii which comes with a microphone - it was on offer on play just before xmas and am sure its compatible with the guitar hero. think its something really bad like high school musical or hannah montana but am sure its cheap and comes with the mike, will have a look on play and see if can find it

think it was this one but it was way cheaper on the offer - i think it was £15
http://www.play.com/Games/Wii/4-/343...-/Product.html