Shreya's version of 'Ek Pal Ke Liye' is quite similar. It commences with a heard before flute note ('Dil Dooba' - 'Khakee'). However, the passionate crooning by K.K. are missing here, taking nothing away from Shreya who is an absolute delight and sings with feelings and perfect diction.
Sonu's version of 'Ek Pal Ke Liye' is also similar to that of Shreya, with of course Sonu's fine and experienced nuances added.
After listening to the three versions, it is Shreya who comes on top followed by Sonu and K.K. takes the third spot on the podium.