A MIDI file (short for Musical Instrument Digital Interface) is a type of computer file that contains data for representing and playing music electronically. It does not contain actual sounds but rather instructions and data that guide electronic musical instruments or synthesizer software on how to produce music.

A MIDI file is a music file format that stores command and musical performance data, allowing for the creation, editing, and playback of electronic music. It is widely used in music composition, audio production, and live performances.

You can download MIDI files from various websites, including:

- https://www.midifiles.com/fr/

- http://www.acroche2.com/

A MIDI file typically has the extension .mid, but you may also come across files with the .kar extension. A .kar file is a karaoke file that contains both song lyrics and musical information in the form of MIDI data to synchronize lyrics and music during karaoke performances.

To edit MIDI files, you can easily find software options, with some of the most well-known ones being:

- Ableton Live: Ableton Live is music production software that integrates powerful MIDI features and is widely used for live electronic music creation.

  

- Logic Pro X: Logic Pro X is music production software for Mac users, offering a comprehensive set of MIDI tools for composition, editing, and music production.

- Pro Tools: Pro Tools is professional audio production software that also supports MIDI editing, commonly used in the music industry for recording and post-production.

- Cubase: Cubase is popular music production software with advanced MIDI features, used for music composition, recording, and mixing.

- FL Studio: FL Studio, formerly known as Fruity Loops, is music production software with a user-friendly interface and robust MIDI capabilities.

- GarageBand: GarageBand is free music production software for Mac users, ideal for beginners and offering basic MIDI functionality.

- Avid Sibelius: Sibelius is professional music notation software that allows you to create and edit music scores using MIDI.

- Built-in MIDI Editors: Many audio sequencers and digital audio workstations (DAWs) include built-in MIDI editors. For example, Ableton Live, Logic Pro X, Cubase, and others offer MIDI editing features.

- Musescore: Musescore is free and open-source music notation software that enables you to create, edit, and print music scores using MIDI.

- Rosegarden: Rosegarden is open-source MIDI editing and music notation software designed for Linux systems.

These software options vary in terms of complexity, cost, and features. The choice of MIDI editing software will depend on your needs, skill level, and the operating system you are using. Many of these programs offer free trial versions, allowing you to try them out before making a decision.