Why is it that the first star of a scene sometimes fills up after one round of playing and can sometimes..

Thanks but that's not my question. I'm trying to ask why it takes different number of times I play the scene for the the first star to fill up in different scenes. For instance sometimes I only have to play the scene once and the first star fills up, but at other times I have to play the scene up to 4 times for it to fill up. (I'm only talking of the first star in different scenes.)

First star in the first scene of each chapter takes about 1 play. First star in the 2nd scene in each chapter takes about 2 plays. First star in the 3rd-5th scene takes 3-4 plays. That's because the stars require more points to fill them.

That's just the way the developers designed it with each scene in a chapter requiring more plays than the last.

Ok, I thought I was doing something wrong! Thanks a lot.

Depends on your score too. You can fill first star on first try if you are fast. Some scenes are easier than others to play fast.

I disagree. I score pretty consistently and the first star of the first scene in the chapter I can always finish with one play. But first star in later scenes require more, no matter how fast and efficient I play.