In 1892 he left for Dresden where he enrolled for 4 years at the Royal Conservatory and worked the piano with Karl-Heinrich Doering (1834–1916), pipe organ with Julius Johannsen (1852–1921) and musical composition with Felix Draeseke (1835–1913).
In the same year, he succeeded his former teacher of composition, harmony and counterpoint, Charles Blanchet, at the Lausanne Conservatory.
He conducted the Société mixte Sainte-Cécile, as well as the men choral La Recréation of Yverdon-les-Bains.
In 1903, he composed the Cantate pour le centenaire de l'indépendance vaudoise, after a text by René Morax.
Several personalities of the musical world had epistolary contacts with Denéréaz about this book, in particular Nadia Boulanger and Alfred Cortot.