If I was in creative I would ask the contestants to sing following songs , keeping their voice texture, scale, suitability yet challenging them at the same time.
Kamal-Ye jo des hai tera (Swades)
[YOUTUBE]http://www.youtube.com/watch?v=UC-RFFIMXlA[/YOUTUBE]
Sniti-Saiyya pakad baiyya (Nayak)
[YOUTUBE]http://www.youtube.com/watch?v=bU15lAw2ULU[/YOUTUBE]
Sugandha-Radha kaise na jale (Lagan)
[YOUTUBE]http://www.youtube.com/watch?v=VmC86-uX7JE[/YOUTUBE]
Fareed-Lat uljhe (Yuvraaj)
[YOUTUBE]http://www.youtube.com/watch?v=4gkCtvYIwEo[/YOUTUBE]
Abhilasha-kahta hai mera ye dil (with sargam towards end)
[YOUTUBE]http://www.youtube.com/watch?v=ByLokE7q59c[/YOUTUBE]
Ranjeet-Ae ajnabi tu bhi kbhi (Dil se)
[YOUTUBE]http://www.youtube.com/watch?v=RvG7kBeRrJ0[/YOUTUBE]
Khurram-sun ri sakhi (Hum se hai muqabala)
[YOUTUBE]http://www.youtube.com/watch?v=HF1C2QvpeJw[/YOUTUBE]
Bikash-hum hai is pal yaha (Kisna)
[YOUTUBE]http://www.youtube.com/watch?v=TUXoEeOnPFE[/YOUTUBE]
Sher Ali-Hai re hai re hai rabba (Jeans)
[YOUTUBE]http://www.youtube.com/watch?v=OZ8RudrQE80[/YOUTUBE]
Preconditions; Live orchestra, theme A R RahmanShiv_Hari as judge
Elimination based on jury
No tempering with scale, besura will be required to fast after show on 1 hour/ sur missed