This became the focus of the second component of the research project —an in-depth case study of one of the primary school teachers from the first component who reported practising the integration of mathematics and music and who was willing to participate in the study. The case study involved interviews, observations and documentation. It aimed to identify and further explore in detail issues highlighted by the interview component of the study and to provide information pertaining to how a teacher plans, programs and implements instruction involving the integration of mathematics and music.