Räihälä finished the Stoa Trilogy in spring 2002. The work was written for Maria Puusaari, and was started in the end of the previous year. This duo for violin and piano was heard for the first time in the Helsinki concert of Räihälä's compositions in November 2002. Some 16 months later it was performed twice in France, which at the same time was the composer's French debut.

Stoa Trilogy consists of three movements that can be played separately. As one can suggest, the title refers to the three states of mind, as taught by the ancient Stoans. The first, Ataraxy, is very calm and thoughtful. The second, Apathy, has some more movement, but is still quite turned inwards. The last of the three, Autarchy, is a finale with rapid running forward, stopping to draw breath here and there. Räihälä stresses that he is not a Stoan himself, and is open to influences from the world around him. He underlined this with a little quotation from a song by the early 1980's Finnish rock group, Hassisen kone.