Confusion is just what once you thought you knew.

You will probably know the electro-dominated single 'Somebody That I Used To Know' [but to be fair the album is not all like this, far from it indeed] currently doing the rounds with Australian-Belgian Gotye at the helm and featuring female guest vocals by New Zealand singer Kimbra (and probably better known as a guitarist). I like it but it is not the same as 'Someone You Used To Know' and I like this even more, which is why I'm mentioning it here.
The confusion mentioned in the post title will, along with my liking for acoustic music, hopefully become clearer here:

'Someone You Used To Know' is a totally different song, and an original, by singer-songwriter Zee Avi. If you think that Australia has a surprising musical influence you are right. Gotye is Australian but Zee Avi is not - she is from Sarawak, Borneo - and while 'Someone You Used To Know' is not actually on her latest album, 'Ghostbird', it is well worth a listen and so is the album.