The laboratory of ensemble music is a very important moment of music education. By playing with other fellow students , a pupil can analyze his/her ability on the musical instrument (technique, reading, ear training, etc.), tackling issues that can be studied only by playing with other people, such as interplay, arrangement, and repertoire building. Essential complement to learning a music instrument, ensemble music allows the pupils to refine his/her technique inside a group, developing his/her listening ability, his/her sensibility and attention.