• txt mid Johann Pachelbel - Canon (thank icy for inputting the score)
• txt mid Johann Sebastian Bach - Minuet
• txt mid Johann Sebastian Bach - Invention 14th
• txt mid Johann Sebastian Bach - Preludio
• txt mid John Rutter - For the Beauty of the Earth

Sorry for my English. Please visit the Chinese version if you understand Chinese.

MIDI Composer accepts a series of words as input. Words are separated by spaces (including space, tab and new-line) or bar-line "|". Each word conforms a certain format and represents one or more notes, or a MIDI controller message.

A note word is in the form of [note][duration]. In [note], use 1234567 0 or CDEFGAB P to represent the 7 notes on the keyboard and the rest. Prefix - or + to the number or letter to lower or raise one octave, prefix ! or # to lower or raise half tone. Immediately following [note] is [duration], . / \ and - represent adding a half, cutting a half, multiplying 1/3 (useful in writing triplets) and adding a quarter note to the duration, respectively. If no [duration] exists, the duration will be a quarter note. Summarization:

Some examples and more complicated writings: (Notice the spaces!)

Following is the descriptions of some none note words (N is a none negative, letters inside brackets may be left out):

When the notes on the staff go too high or too low or modulate, note shift words may be useful in simplifying the writing. For example, ++1 ++2 ++3 ++4 may be written as ++ 1 2 3 4, where ++ means all notes thereafter will raise two octaves. Explanation on note shift words (always remember that 1~7 is equal with C~B):

It's worth to mention that, when a note prefix only modifies the immediate following note, a note shift word will affect all the notes that come after it. If a note is affected by a long range sharp or flat, note prefix % may be use to revert the note to its nature tone. Here is an example, the following lines all play with an identical result:

C=60 1234567+1      567+1+2+3+#4+5      +1+2+3+4+5+6+7++1
C=60 1234567+1 C=G  1234567+1      C=+C 1234567+1
C=60 1234567+1 C=67 1234567+1      C=F  1234567+1
C=60 1234567+1      567+1+2+3+#4+5 +    1234567+1
C=60 1234567+1 4#   567+1+2+3+4+5       +1+2+3+%4+5+6+7++1

Strength of notes may be controled with words relating to < or >. < stands for gradually increasing and > stands for gradually decreasing. Detial description (N is a none negative):

When the staff becomes long, in order to keep synchronization between channels against input mistake, also in order to avoid writing too long rest when a channel suspend playing, synchronization control words are introduced:

$0       +3+#2// | +3+#2+37+2+1// | 6/ 0//
$1 C=-C  0/      | 0.             | -636//

$0   136// | 7/ 03#57//  | +1/ 03+3+#2// |
$1   0/.   | -33#5// 0/. | -636// 0/.    |

assert_equal

• Standard MIDI-File Format Spec. 1.1, updated
• MIDI Specification