A central feature of this book is the contribution of a new theoretical framework for exploring identities, practices and learning. The new framework, the Snowball Self, helps to explore drummers’ practices as they contribute to the realization of identities and learning. ‘Practices’ include everything that drummers do – performing, recording and rehearsing on the drum kit, interacting socially with fellow band members, writing music, learning to play their instrument, and any other activities described by participants. Different drummers engage in different practices; they also often do many similar things. These are compared and discussed to present as broad a picture as the data allow, of what drummers do and how this contributes to making them who they are.