Music Demo refers to a recorded draft of a song without any modification, also known as a "music sample". Usually produced by professionals such as composers, arrangers, and producers. This process can use a variety of instruments and tools, such as MIDI, keyboards, guitars, percussion, and more. Because demos are usually used to showcase musical works to bands, record companies, or other artists, they often require multiple updates and modifications at each stage of music production.

As a key component of music creation, music demo is a very important tool for musicians. It can help creators transform inspiration into works in various forms and present them to partners or record companies. Demos can also help artists gain exposure for their music. The quality of the demo often has a crucial impact on the future development of the creator's music.

With the continuous updating of technology, music demos have also taken different forms in history. Early demos usually had to be recorded by a master and required the entire musical work to be copied to a record, and then copied by the record company. Nowadays, most music demos are produced in digital recording formats and can be easily shared with target audiences through the Internet. In addition, in recent years, many demos produced with the help of music software have appeared. These demos usually have high-quality production values ??and have received widespread attention and recognition.