Singing activity is the basis of music education and its essential implementation form at all stages of general education. Voice is a primary musical instrument and an elementary means for performing that enables pupils to approach musical art in an appropriate way so that they can successfully receive, experience and evaluate it. With the research we discover and prove the importance of mastering the vocal technique of teachers, which is a prerequisite for quality singing activity in primary school. From the stated it follows that the application of a quality method of vocal technique, which teachers use both in speech and singing undoubtedly means improving the quality of singing activity in the educational process. The results also highlight important correlations between teachers and pupils in music education, and especially in singing activities, where we determine the strong influence of teachers on pupils.