Compared to prerecorded audios, MIDI files are much easier to be modified and manipulated.The sizes of MIDI files are relatively small.You can consider it a trigger for communicating the information to another device so that they all understand this language. Instead of being audio signals, MIDI transmits information about notation. To this end, Musical Instrument Digital Interface was created. Back in the 1980s, manufacturers of digital music instruments felt the need to create a unified language that would allow different pieces of digital music equipment to communicate to one another. MIDI stands for Musical Instrument Digital Interface. In this article, you will be finding the 5 best free MP3 to MIDI converter software and online tools to use. MP3 to MIDI converters convert MP3 audio data into MIDI musical notation. Converting MP3 to MIDI is a popular demand, especially among electronic music producers and artists.