This file is an adaptation of the credit Let's make music with computers for the RTEE project. Within the adaptation we have tried to maintain the structure and methodology of the activities - the most notable changes have been made in the collection of melodies which in the original version were mostly Catalan popular songs and have now been extended to European popular melodies from the countries participating in this project. The instructions given in this document are common to all programs for editing musical scores. It will be necessary to redraft and explain the operating instructions for the program used in order to carry out the activities. Also included are specific instructions for the program Music, which is available in Catalan, Castilian, Galician and English. The adapted version of Let's make music with computers is of curricular material in the field of music, designed to be developed during the first (or second) cycle of compulsory secondary education. It provides for the broadening and consolidation of the most elementary musical language already assimilated in the field of music or for introduction to this subject matter where the pupil has never previously worked with musical language. We assume that the pupil, across the common music curriculum, has worked previously on concepts of pitch, duration, intensity, timbre, melody, rhythm, harmony, texture, polyphony and form. The material in this file has been produced to contribute to the reaffirmation of these concepts through experimentation and practical work using computers, and to familiarise the pupil with this tool. We believe that the fact of using computers to make music is a good way of realising the potential of pupils from twelve to fourteen years old, even though computers do not have the expression of the human voice or that of a musical instrument. We are all aware of the inherent complexity of musical language, both as regards instrumental technique and the abstraction of graphical representation. Evidently the computer is becoming a means to facilitate and simplify these two elements, and yet, it allows pupils to participate in tasks of musical performance, reading and writing, and of creation.