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ABC notation
ABC notation is a shorthand form of musical notation. In basic form it uses the letters A through G to represent the given notes, with other elements used to place added value on these - sharp, flat, the length of the note, key, ornamentation. Later, with computers becoming a major means of communication, others saw the possibilities of using this form of notation as an ASCII code that could facilitate the sharing of music online, also adding a new and simple language for software developers. In this later form it remains a language for notating music using the ASCII character set. The earlier ABC notation was built on, standardized and changed to better fit the keyboard and an ASCII character set by Chris Walshaw, with the help and input of others. Although now re-packaged in this form, the original ease of writing and reading, for memory jogs and for sharing tunes with others on a scrap of paper or a beer coaster remains, a simple and accessible form of music notation, not unlike others, such as tablature and Solfeggio. Originally designed for use with folk and traditional tunes of Western European origin (e.g. English, Irish, Scottish) which are typically single-voice melodies which can be written on a single staff in standard notation, the work of Chris Walshaw and others has opened this up with an increased list of characters and headers in a syntax that can also support metadata for each tune.
ABC Notation being ASCII-based, any text editor can be used to edit the music. Even so, there are now many ABC Notation software packages available that offer a wide variety of features, including the ability to read and process abc notation, including into midi files and as standard 'dotted' notation. Such software is readily available for most computer systems including Microsoft Windows, Unix/Linux, Macintosh, Palm OS, and web-based.
Later 3rd-party software packages have provided direct output (bypassing the TeX typesetter), and have extended the syntax to support lyrics aligned with notes, multi-voice and multi-staff notation, tablature, and MIDI.
== History of ASCII ABC Notation ==
In the 1980s Chris Walshaw began writing out fragments of folk/traditional tunes using letters to represent the notes before he learned standard Western music notation. Later he began using MusicTeX to notate French bagpipe music. To reduce the tedium of writing the MusicTeX code, he wrote a front-end for generating the TeX commands, which by 1993 evolved into the abc2mtex program. For more details see Chris' (short history of abc ), and John Chambers' (chronology of ABC notation and software ).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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