MIDI, or Musical Instrument Digital Interface, is a technical standard that allows electronic musical instruments, computers, and other devices to communicate with each other. It transmits information about music performance, such as notes played, their duration, and intensity, rather than actual audio signals. This enables musicians to control various instruments and software using a single device. MIDI is widely used in music production, allowing for easy editing and arrangement of musical compositions. It supports a variety of instruments, including synthesizers and drum machines, making it a versatile tool for both amateur and professional musicians.