Like most of the pieces presented as part of the Mysteries of Easter, I do not recommend this for training the mind. It's far too turbulent and emotional for that. Nevertheless, it is incredibly beautiful and should be enjoyed for the work of genius it is. Here is a bit I copied out of the internet about it:
Alexander Scriabin - Prometheus: The Poem of Fire
"Prometheus: The Poem of Fire, first performed in Moscow on March 2, 1911, with Scriabin as piano soloist and Koussevitsky conducting, forms a distinct chapter in his symphonic work. Across its twenty-minute span, Scriabin attempts to depict nothing less than the development of human consciousness, from primordial formlessness through man's emerging self-awareness to a final ecstatic union with the cosmos. In Greek mythology
(and in Aeschylus and Shelley), Prometheus had been a rebel who battled the gods on behalf of man, but Scriabin saw in Prometheus' fire the symbol of human consciousness and creative energy. He attempted to depict this musically in "Poem of Fire" and he envisioned not simply a "symphony of sound" but a "symphony of color rays". Toward this end he conceived a new instrument --the tastiera per luce, or "color-keyboard"-- that would project light of different colors on a screen behind the orchestra, reproducing visually what the orchestra was dramatizing in sound. It was a visionary conception and one of the earliest early multi-media events."