Aimée Portioli is a Berlin-based Dutch-Italian composer and sound designer who records and performs as Grand River.

Portioli makes experimental electronic music with rich emotional colors. Her work, influenced by minimalism and ambient music, is evocative yet rhythmically complex, incorporating a wide range of contemporary composition and production techniques.

She collaborates with visual artist Marco Ciceri on special A/V performances, as well as on visuals for One Instrument, the record label she founded that invites artists to respond to a unique creative brief: to create a piece of music using only one instrument.