It has been a decade since the implementation of Hong Kong's policy of inclusion, that mainstream schools should admit students with special educational needs (SEN). This study reports on music teachers' experiences of teaching SEN students in inclusive music classrooms. Data were derived from a qualitative multiple case study comprising 10 government-funded primary school music teachers. These music teachers lack knowledge of ways to support the musical development of pupils with SEN and reported learned helplessness and effective exclusion of SEN students. The major barrier to effective inclusive music teaching evidenced is the absence of in-service training in inclusive music education.