Found this on Youtube, its an original song from them.

Very different to what they did on the show, dance orientated.

https://www.youtube.com/watch?v=xDWkZ5br2MM

I think that they are a good pop act, but it's all about the girl in the group ,so pretty even if her voice is pretty average

Their cover of 'Streets Of London' - Nice.
Should have performed it in the final.

HERE