In early childhood, the first vocal attempts follow the general contours of the target melody. Those attempts gradually improve, turning into a more accurate performance both in melodic shape and tonal stability. The aim of this study was to test some categories disigned to typify children´s vocal development during childhood. These categories involve vocal emission and tonal stability. A group of forty three children were selected between forty and fifty months old in a kindergarten school of La Plata, Argentina. The task consisted of singing two chosen songs: one beginning in an ascendant pentachord and the other in a descendent one. We used a karaoke sound track in a comfortable tonality for the age (D Major). Answers were recorded and the responses were assessed by a team of judges. Melodic and tonal categories were designed to analyze the anwers. The songs were taught by a teacher. The test was supplied twice: each child was recorded singing both songs on two different days. The majority of the children sang with an emission pitch close to the speech mode without a tonal centre. The results show statistical signification and positive correlation between vocal emission and tonal categories in both songs.