Once Upon A Winter started out as a solo Post-Rock/Blackgaze project from Thessaloniki, Greece, created by Ilias Kakanis.

In 2017, the debut album Selective depression in chase of the Big Bang  was self released. One year later, in 2018, the second album .existence was released. This release marked a new beginning for Once Upon A Winter, signing a contract with the Finnish label Snow Wave Records.

In 2018, the live line-up of Once Upon A Winter was assembled, consisting of:

Ilias Kakanis - Guitars, Vocals

Angelos Athanasiadis - Guitars

Fotis Sitaras - Bass

Konstantinos Noulas - Drums

Nick Taras - Keyboards

Since then, the band performed as a support act for God is An Astronaut in their hometown, Thessaloniki, as well as in other Greek cities. In November of 2019, the band completed their first European tour performing shows in Germany, Switzerland, and Italy.