UnSun is a Polish Melodic Metal band formed by the guitarist Maurycy "Mauser" Stefanowicz member of the Death Metal band Vader. The 2008  debut album of UnSun, is The End of Life on Century Media. Originally formed under the moniker Unseen, the dynamic four piece around Polish guitar maestro Mauser (who is also playing in Vader, one of Poland's renowned metal bands) finally decided that something incorporating day and night, light and darkness would suit them best. A label for their music which is melancholic and a little dark at times, yet catchy at the same time. Something that would put a name to the bitter-sweet twist of Aya's highly melodic vocals topping the driving force of the underlying guitar riffs.