"Leon Theremin had come to the Bolshevik leader's attention after inventing a revolutionary electronic musical instrument that was played without being touched.
Theremin was nervous before meeting Lenin, but later said the demonstration of his invention, which became known as the Theremin, had gone well."
For the full story, please see bbc.co.uk.
"People are impressed that CYSO has its own app. InstantEncore makes it very easy for us to create and maintain an engaging mobile presence. The At-The-Event feature has been particularly great for prompting people to interact with us via social media."