This animated gif shows the initial stages of the background for a new painting in my Painting Music: Colour study series. Each painting is monochrome or has a very limited colour range.
The theory behind the series is tonality – the note sequences used to produce music. In modern Western music, most music fits the diatonic system. There are 13 major and 13 related minor keys.
This new picture – B major, is based on the violet range.