Core MIDI is a framework developed by Apple that allows software applications to communicate with MIDI (Musical Instrument Digital Interface) devices. It enables musicians and producers to connect keyboards, synthesizers, and other MIDI-compatible instruments to their computers and mobile devices, facilitating music creation and performance. The framework supports various MIDI functionalities, such as sending and receiving MIDI messages, managing MIDI connections, and routing data between devices. Core MIDI is widely used in music production software, making it easier for users to integrate hardware instruments into their digital audio workstations (DAWs) and enhance their creative workflows.