The purpose of this work is to identify and investigate non-lexical elements, however producers of meaning in vocal performance in the song field. We take as a starting point the studies of Paul Zumthor, a Swiss linguist, who, when speaking of poetic voice, states that it transcends the symbolic language and expresses its material qualities in tone, timbre, loudness and other sound elements that in spite of being called non-linguistics are significant and responsible for creating presence. We have developed our research around some of these elements, trying to comprehend how they act, organize and create similarities and differences that affect directly the creation of meaning in the language in its musical state. At the same time, we adopted as a theoretical and empirical concept the proposition of Luiz Tatit, a Brazilian songwriter and also a linguist, who advocates that the efficacy of the poetic language in the universe of song lyrics comes from the characters of the intonation. In this investigation of the sound elements, we intend to find sufficient material to subside our theoretical reflections and aesthetical propositions.