A framework for studying teachers’ hand gestures in instrumental music pedagogy is proposed, focusing on teachers’ teaching behaviours as a context-dependent basis for understanding the meaning and functionality of their gestures. The application of the Teacher Behaviour and Gesture framework across instrumental music pedagogical settings (one-to-one, small and large teaching groups and across singing, woodwind, brass, strings, and other pedagogical contexts) will bring understandings on the role of teachers’ gestures in their pedagogical interactions with students, with implications for student learning and instrumental music teachers’ teaching and education.