MIDI stands for Musical Instrument Digital Interface. It is a way for computers and musical instruments to communicate with each other, like having a conversation. MIDI is a type of language used to share music between machines. It is like a set of instructions that tell the computer or instrument what to do and when to do it. It was first developed in the 1980s and it is still used today. It can be used to control synthesizers, sound chips, and lighting equipment. MIDI is like a bridge between computers and musical instruments. When a musician plays a note on their keyboard, the MIDI tells the computer or synthesizer what note to play and when to play it. It makes creating music easier and faster because all the musician has to do is press a button or key and the computer or instrument does the rest!