 Kandinsky himself, however, stated that his correspondences between colors and musical timbres have no "scientific" basis, but were founded upon a combination of his own personal feelings, current prevailing cultural biases, and mysticism (; ; Jewanski & Sidler 2006, Campen 2007).The interest in synesthesia is at least as old as Greek philosophy.One of the questions that the classic philosophers asked was if color (chroia, what we now call timbre) of music was a physical quality that could be quantified (Campen 2007, Gage 1994, Ferwerda & Struycken 2001, Jewanski 1999).