Squid Lake (Earth-2356)

Squid Lake was a ballet performed by the Mon Calamari Ballet during the Clone Wars. One of its performances took place at the Galaxies Opera House shortly after the Battle of Coruscant. It was during this performance that Supreme Chancellor Sheev Palpatine told Anakin Skywalker of the Tragedy of Darth Plagueis the Wise, which the former claimed to be Sith legend.

Source

 * https://starwars.fandom.com/wiki/Squid_Lake/Legends.