Last year there were 3 in the final but they had two shows - and early in the evening one went, and then the other two sang a couple of songs and were voted on again. So maybe it's the same. 1 is voted out tonight and then on friday they have a sort of semi final and final show but on the same night. On the other hand, i am probably talking rubbish or maybe, Claudia misspoke. She does have a tendency to waffle and babble meaning misspeaking is not necessarily unlikely.