Growing up watching anime, Kjellska started singing in Japanese when she was little. Little did she know that would become her passion. And so, in 2014, she decided to upload her first cover to YouTube.

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In 2017, she started working on multilanguage versions of various songs, from anime and VOCALOID songs to video game soundtracks.

Her most famous cover to this day is her multilanguage take on Weight of the World.