Here is my full review of the program.
teachingmytoddlers.blogspot.com/2013/02/...-piano-learning.html
The stickers are simply office supply dots colored in with marker. In this picture they have a strip of shiny scotch tape over the length of them but after a while I found it was not necessary. They are easier to remove without being "laminated" by tape. It was simpler for me to just replace them occasionally until, like training wheels, they could be removed entirely.
Thank you for the kind remarks. In these videos, Owen was almost 3, and Lily had just turned 4. We have been using SM since January 2012 officially when the majority of BK parents became involved, but we began using it with a much more concentrated effort around May/June 2012.