I hope when they get down to doing two songs per person one of the themes is acoustic.
It would be a good way to strip the acts of all the backing singers, dancers etc and get down to the vocals and see who has the voice and who doesn't.
This way the audience gets one up tempo song and something devoted to vocals and would stop the judges moaning about acts not changing it up
Seems to be a common trend over past year for many pop acts to add acoustic versions of their songs to singles/albums such as Lady Gaga, Jesse J to name a few.
It would be a good way to strip the acts of all the backing singers, dancers etc and get down to the vocals and see who has the voice and who doesn't.
This way the audience gets one up tempo song and something devoted to vocals and would stop the judges moaning about acts not changing it up

Seems to be a common trend over past year for many pop acts to add acoustic versions of their songs to singles/albums such as Lady Gaga, Jesse J to name a few.