This study aims to determine pre-service music teachers' opinions about the significance of the choir lesson. This is a qualitative research. The data were acquired with the participation of 54 pre-service teachers. An open-ended interview questionnaire was used to collect the data. The data were processed using content analysis and classified in eight categories. These categories are: perception, the consciousness of singing together, social development, harmonic ear training, technical development, musical development, professional competence and listening skills. It was found that the categories and themes created in regard to the opinions of the teacher candidates included in this study were compatible with one another.