This bachelor thesis deals with an analysis of pronunciation in singing and speaking. The thesis is divided into three chapters. The first two chapters are focused on theory which works as a basis for the third part of the bachelor thesis – research. The first chapter describes speaking and the second chapter describes singing. The main goal, partial goals and research questions are introduced in the practical part of the thesis. It also contains information from teachers at conservatory who participated in the research and characteristics of the results of the activity. There were used these techniques in the thesis: semi-structured interview and observation.