The objective of this research is to analyse the relationship between the musical aptitudes of primary-school children of the Region de Murcia and their intelligence quotient. The participants are 85 students, 37 girls and 48 boys between the ages of 9 and 13. The instruments used to collect information, have been: the battery of differentials and generals aptitudes (BADYG-E3), which gives information about the intelligence quotient and, the tests of musical aptitudes of Seashore. The results show high and significant correlations between some of the analysed variables.