Erkki-Sven Tüür really exploits the potential of the piano in this three-movement sonata. The opening and closing movements are based on flowing, pianistic arpeggios, whereas in the slow middle movement the harmonies are brought out by means of harmonics reinforced an octave higher by the piano's sounding board and pedal. Premiered by Kalle Randalu at the University of Tartu in 1986, the sonata shows traces of minimalism and impressionism.