Jan Hage (1964) had his first organ lessons with Kees van Eersel. They were followed by studies in musicology at the University of Utrecht, organ (Jan Welmers) and music theory at the Utrecht Conservatoire, and church music at the Netherlands Institute for Church Music. He finished his studies with diplomas for music pedagogy and performance (with special mention for improvisation) and the Praktijkdiploma Kerkelijk Orgelspel (practice diploma for church music performance), all of them 'cum laude', a diploma for music theory and a masters degree in Musicology. For two years he studied, with help from the French government, at the Conservatoire National de Région at Boulogne-Billancourt near Paris: organ (with André Isoir), composition, electronic music composition, and orchestration. He completed his organ study with the Premier Prix with unanimity of the Jury. He went on to win first prizes at the National organ competition for music students at Leiden (category 20th century music), the National Organ Improvisation Competition in Bolsward, the Swiss Organ Competition in Schaffhausen, and the Premier Concours de l'interprétation de Musique Classique in Poitiers. In 2006 he was decorated with the silver medal of the Société Académique 'Arts-Sciences-Lettres' in Paris for services to french organ repertoire. Jan Hage gives organ recitals all over Holland and abroad. He is also active as a composer, continuo player and accompanist. His advocacy of contemporary music makes him a regular guest performer at ensembles and orchestras such as the ASKO Ensemble, the Percussion Group The Hague, the Rotterdam Philharmonic, the Dutch Wind Ensemble and others.

In 1995 he was appointed organist of the Kloosterkerk in Den Haag.