Teaching is a highly complex act, and learning to teach in an educational era that combines both teacher-centred and student-centred approaches presents additional challenges. Conducting demonstration lessons (DL) is one of the methods aimed at enhancing teachers’ instructional skills. This study examines the features and functions of this unique type of lesson from the perspective of music demonstration teachers in Guangdong, China. Through observation and interviews, the findings not only reveal the prevalence of DLs as performance-based lessons in Chinese teachers’ professional lives but also explore their distinctions from regular school teaching and their potential for improving teachers’ pedagogical abilities. Concerns and issues related to this type of lesson, along with possible solutions, are also discussed to provide recommendations for incorporating DLs into teacher training programmes in higher education institutions.