Mysterium is an unfinished musical work by composer Alexander Scriabin. He started working on the composition in 1903, but left it incomplete when he died in 1915. Scriabin planned that the work would be synesthetic, exploiting the senses of smell and touch as well as hearing. He wrote that
Scriabin intended the performance to be in the foothills of the Himalayas in India, a week-long event that would be followed by the end of the world and the replacement of the human race with "nobler beings".
At the time of his death, Scriabin had sketched 72 pages of a prelude to the Mysterium, entitled Prefatory Action. Alexander Nemtin spent 28 years reforming this sketch into a three-hour-long work, which was eventually recorded.
In popular culture
Scriabin's Mysterium is depicted in Issue 3 of the graphic novel trilogy Suffrajitsu: Mrs. Pankhurst's Amazons (2015).
The Mysterium also plays a central role in the supernatural serial podcast The Black Tapes.