Joanna Klepko, better known by her stage name Cleo, is a Polish singer and songwriter. She also started her own fashion line called Slavica.
She has been working with her partner Donatan since 2013 and together they represented Poland at the Eurovision Song Contest 2014 in Copenhagen with the song My Słowianie which finished 14th overall in the final.
She was one of the five jurors for Poland in the 2021 contest in Rotterdam.