Duo Ruut's (Duo Square) sound is based on the common ground that two young Estonian musicians and songwriters, Ann-Lisett Rebane and Katariina Kivi have explored since coming together in 2017. Their sound ties together a single Estonian zither and two distinct voices. Inspired by the traditions of their Estonian heritage, they draw influence from both the beliefs of different cultures and their own contemporary and emotive songwriting. As they are composing on one instrument Duo Ruut’s music is minimalist at its core but packed with new and imaginatives ideas. In December 2019 Duo Ruut released their debut album "Tuule sõnad" which was awarded as the Debut Album of the Year by Estonian Ethno Music Awards 2020. The same album was nominated in different categories at Estonian Music Awards 2021. In 2021 Duo Ruut released an EP called "Kulla kerguseks" ("Golden Light") which has received strong organic support internationally. The EP was nominated for the "Ethno/Folk Album of the Year" by Estonian Music Awards 2022.