This manual covers the technical and musical achievements of the 4th year of Music Training. Each chapter is articulated around the same fundamental notion whose increasing difficulty requires study on two, see three weeks. In general, it will be very profitable to use in course of FM, equal to the voice, the instruments practiced by the pupils. Any exercise must first be sung and then played, be it melodic or rhythmic memorizations, rhythmic readings with or without note names, readings sung there are really only the readings of notes that will only be spoken. This conception of musical training linking the theory to the instrument is very beneficial for the pupil because it allows to progress continuously by instrumental concretisation of his knowledge. Naturally, it requires, according to the instruments, some adjustments on the part of the teacher.