Hans Eugen Frischknecht was born on 8 May 1939 in St Gallen (Switzerland). After qualifying as a piano teacher in Switzerland, he studied at the Berlin Academy of Music. His teachers included Michael Schneider (organ), Boris Blacher (composition), Josef Rufer (12-note composition) and Ernst Pepping (counterpoint). After graduating he continued his studies in Paris with Olivier Messiaen (Classe d’Analyse at the Conservatoire national supérieur, first prize in 1964), Gaston Litaize (organ) and Robert Veyron-Lacroix (harpsichord). He won first prize at the International Organ Improvisation Contest in St Albans in 1971.
Hans Eugen Frischknecht was organist and choirmaster at the Johanneskirche in Bern from 1964 to 2002, and taught theory and improvisation at the Biel Academy of Music from 1983 to 2003. He established an extensive concert practice that took him to various countries in Europe and America. He often gave concerts together with his wife, the organist Eliane Frischknecht.
His compositions include works for organ, piano, harpsichord, different chamber instrumentations, choir, symphony orchestra and wind orchestra. They have been performed in many countries, often with the composer himself at the organ.