We have a recording of one complete lesson, and also various lesson excerpts with different exercises. We cannot show you all the lessons throughout the year, but if someone is interested, please contact us with questions. We are ready to tell you everything in great detail, as we are sure that this system WORKS. The preparatory group accepts any children, without preliminary testing, from age 2 to 5 years old. The number of children in a group can vary: at least two children, maximum 12.