Which video is most effective?

I’ve recently had a video made professionally for my middle grade novel, which turned out great by the way, and I wanted one also for my children’s picture book series. I decided this simpler concept was something I might be able to pull off myself. I’ve created two potential videos and would like your opinions on which is best. I feel one is more child-friendly and the other perhaps more parent-friendly. While keeping in mind it is the parents who select and buy the books, it is also true that the children must be sold on them as well. So which would you choose? You may simply refer to them as “first” and “second.” The main difference between the two is the music, but the picture in the last frame is also different. You may comment on either or both factors. Thank you so much. ——Holli