In his final symphony, Prometheus: Poem of Fire, Scriabin used tool he built himself, called the “tastiera per luce” to project colors in sync with the music. He used tables of correspondence from Theosophy that associated different colors and tones with different planes of reality, such as spirituality and reason. Scriabin’s obsession with associating colors with particular tones lead to suggestions that he had synesthesia. But after Prometheus, he abandoned Theosophy’s tables of correspondence and created his own, leading scholars B. M. Galeyev and I. L. Vanechkina to conclude that Scriabin did not actually have the condition. Yet a drive to synthesize aspects of the occult with sound, light and other senses into a single art form remained.