Hekker, Willem J.C.

Andante
year of composition: ?
duration: t.b.a.;
publisher: Éditions Maurice Senart, Paris 1923;
dedicated to Dorothea J. Loseby;
location: Muziekbibliotheek van de Omroep, Hilversum.

Exotique
year of composition: ?
duration: t.b.a.;
publisher: Éditions Maurice Senart, Paris 1923;
dedicated to his son;
location: Muziekbibliotheek van de Omroep, Hilversum.