Abstract
The article presents the results of (author's) own research on the students of earlyschool education imitation and the rhythmical improvisation in the light of their stabilised musical aptitudes measured with Edwin E. Gordon's AMMA test and also Edwin E. Gordon's readiness to rhythm improvisation readiness record (RIRR). In the first part of the research the students imitated some rhythmical patterns diversified in terms of difficulty in duple and triple meter and the subsequent part concerned guiding the oral rhythmical dialogue (on the BAH syllable) by the teacher with the application of various rhythmical motives in different metres. The students' both imitative and improvising performances were rated by three competent judges. What was undertaken was searching for the relations between musical aptitudes, improvisation readiness and the pupils' rhythmical imitation and improvisation abilities.