The Ontrei Duo plays various kinds of ancient lyres – jouhikantele (aka bowed lyre), kantele (plucked Finnish and Karelian lyre), and pyngyr (West Siberian lyre). The members are Rauno Nieminen and Timo Väänänen – both are long term professionals in the traditional and contemporary folk music.

The Ontrei has released it’s first cd in 2014. In 2016, Nordic Notes re-released the Album in Germany, Austria, Switzerland. The Kantele magazine wrote in the review:

The sound world of the cd is full and engaging – this music will guide your thoughts to the new paths. Nieminen and Väänänen share a pulse together and that can be heard and felt. I can imagine how much fun they’ve had when playing together. – Maija Pokela, Kantele 2/2004