i think the reason he couldn't hit the right notes before is that he was coping a singing style. udit narayan's voice is really hard on the diaphragm, so it's hard to control in the throat. i think he made the decision to stop copying udit narayan before the last result round. he sang "mehndi laga ki rakhna" completely differently in the result round than in the gala round, and he sang so much better (as sonu said...)
the real sandeep is here, and be prepared for some smashing performances.
just can't get over how good his real voice is thouugh...