More on Synesthesia

Works of the Russian composer Nikolai Andreyevich Rimsky-Korsakov were reportedly influenced by synesthesia, a medical condition wherein a person experiences sensation in one sense (such as sight) in response to stimulus in another (such as hearing).

According to Wikipedia, Rimsky-Korsakov perceived colors associated with major keys as follows:

Note	Color
C	white
D	yellow
E	flat dark bluish-grey
E	sparkling sapphire
F	green
G	rich gold
A	rosy colored

More interesting, each synesthete seems to have his own code, as can be seen by comparing Rimsky-Korsakov's color system with that of Alexander Scriabin, another Russian composer (source: James Wierbicki):

Note	Scriabin	Rimsky-Korsakov
C	red	white
C#	violet	dusky
D	bright yellow	yellow
D#	steel gray	bluish gray
E	bluish white	sapphire blue
F	red	green
F#	bright blue	grayish green
G	orange-rose	brownish gold
G#	purple-violet	grayish violet
A	green	rosy
A#	steel	gray
B	bluish white	dark blue

I wonder if this has anything to do with the fact that so many visual artists like to paint, sculpt, shoot, etc. with music playing in the background. Which begs the question: do a higher percentage of artists have synesthesia than the general population?