I still hate the premise of the show where you have "Rod Stewart night" "Mo-town night" "aretha franklin night" etc.
These artists will NEVER sing that type of song when they are famous. Why the heck should their future depend on if they can hit the notes of a song style they will never sing?
To me, they should change this to "Acoustic night" "Acapella night" things like that, that way the artist sings music they may actually sing one day.
Every week should be letting the artist sing the type of song they want to perform, so you hear them in their element.