Music Macro Language, commonly referred to as MML, is a music format that originated in the 1970s. It was first introduced on the Sharp personal computer and later gained popularity on the PC-88. MML is a unique format that allows users to create music using a simple text-based syntax, similar to Markdown.

MML stands for Music Macro Language, and its primary characteristic is that it does not require a dedicated editor. Instead, users can create music using a standard text editor like Notepad. This accessibility made MML a popular choice for music creation, especially among hobbyists and enthusiasts.

One of the key features of MML is that it is not specific to a particular sound chip or hardware. Users can write MML code and then convert it to other formats, such as NSF (NES Sound Format), which is a format specifically designed for the Nintendo Entertainment System (NES). This allowed users to create music for the NES using MML, making it a popular choice among NES developers and enthusiasts.

To this day, MML is still used by some music creators, particularly in the retro gaming community. The use of MML has even been incorporated into some modern music-making tools and online platforms. For example, the Japanese online encyclopedia, Nico Nico Douga, features a