A plan of a didactic unit is presented for 3rd grade of Primary students. This plan serves as a model for posing the work in Classroom. In the first place, highlight the two basic pillars in the child's musical education: play and improvisation. Therefore, these two resources will also be fundamental in the teaching of English in the classroom. In addition, we will seek the motivation of students and avoid breaking the inner world of the child (based on imagination and creativity) and their role in entering the music classroom.