Conversation so far:
what is the great comet of 1812 based on
It is based on Volume 2, Part 5 of Tolstoy's novel War and Peace, focusing on Natasha's affair with Anatole and Pierre's search for meaning in his life.
When was the premier of The Great Comet of 1812
The work premiered in 2012 in an immersive production helmed by Rachel Chavkin at Off-Broadway's Ars Nova.
What is the name of the composer of The Great Comet of 1812
Natasha, Pierre & The Great Comet of 1812 is a sung-through musical written by composer/lyricist Dave Malloy and directed by Rachel Chavkin.

Question: What is the theme
Self-contained rewrite: What is the theme of The Great Comet of 1812