Nika Machaidze (also known by the pseudonyms Nikakoi and Erast) is a Georgian video artist, film director, and musician. Machaidze studied animation and film direction at the Shota Rustaveli Theatre Institute in Tbilisi. He has worked as a writer, director, composer and editor for Georgian television. Under the name Nikakoi, Machaidze produces a type of electronic music with references to Georgian folk music. He has won numerous awards, including the grand-prix at the Paris Electronic Music Festival in 1999.