RGB Music RENGA / Four Seasons:
Skyscrapers from Great Lawn in Central Park, New York City, 2010

This is 10 minutes video version.
Actual Web App musics are improvisations kenjikojima.com/999ViewsRenga/seasons/

RGB Music RENGA is an algorithmic composition. It creates about 10 to 60 seconds of compositions from RGB (Red, Green, and Blue) pixel value of a series of Great Lawn in Central Park, New York City photographs.

RGB Music:
The program reads RGB value of pixels from the top left to the bottom right of an image horizontally. One pixel makes three notes of sounds, and the length of note is determined by high or low value of the pixel. RGB value 120 or 121 is the middle C, and RGB value 122 or 123 is added a half steps of the scale that is C#. RGB value 0,0,0 is no sounds.

It is not an impression of a painting or a photograph of a musical variation. It composes a score from an image directly.

Improvisation:
The music is an improvisation by the Web software. Tempos, scales and instruments are changed in every each session. The basic conversion from RGB Value is a twelve-tone scale music, then it is filtered to another scale. R, G and B values are assigned to an instrument from 123 different instruments. These musical elements, the number of the photograph are described at the bottom right.

RENGA and Photographs:
The project title "RGB Music RENGA" was taken from a form of RENGA. RENGA is continuing short and collaborative poetry in Japan. The beginning of lines of a RENGA became HAIKU (a poem of seventeen syllables). A series of everyday life scenarios of photographs was inspired by Hokusai's Thirty-six Views and One hundered Views of Mount Fuji.