The present work analyses the use of the song as a didactic tool in the field of Primary Education, for which a study was carried out with a total of 128 general teachers of Primary Education (22.7% women) active in the Community of Castilla y Leon (Spain), and without a specific musical training. The fundamental objective was to know the musical tools that they use in their classes (especially the song) according to the years of teaching experience. The main results show that music as a transversal tool is highly valued by generalist teachers in line with other research, although there are relevant differences in the use of the song according to the years of teaching experience, with veterans being the ones who use music the most. same. Finally, the causes that may have influenced the reduction of the use of the song as a didactic resource-traditionally considered of great utility and effectiveness-are analyzed and some suggestions are proposed to enhance it.