Alphanumeric, used for musical purposes or with additional musical features, e.g. typewriter or pc-type keyboard reconfigured such that letters or symbols are assigned to musical notes

Full Title

Input/output interfacing specifically adapted for electrophonic musical tools or instruments > User input interfaces for electrophonic musical instruments > Keyboards, i.e. configuration of several keys or key-like input devices relative to one another > Alphanumeric, used for musical purposes or with additional musical features, e.g. typewriter or pc-type keyboard reconfigured such that letters or symbols are assigned to musical notes