Bird ID by song?

I have heard and recorded some beautiful singing which I think is a sort of warbler among the reeds by the dyke at the end of my garden.
I cannot upload the file here as its only for image files. Anyone know of a good forum for this? The rspb was my first thought but they want all my info including a UK address and doesnt work if you are in Belgium like me. No doubt they want it to bombard me with junk mail. I know what they are like.
Any twitchers or birders here?
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Blackcap?
No problems with being in France so try it yourself and then go back to listen to other warblers if it's not the one you have.