Utrecht Summer School has offered a wide range of courses including culture, art, language, business and science in 2014. The number of participants has been growing for decades.  
Utrecht Summer School started in 1987, with one course: Dutch Culture and Society. Nowadays, the programme offers a broad selection of over 170 academic courses in virtually all disciplines organised by Utrecht University, HU University of Applied Sciences and HKU University of the Arts.

Lilli Lehmann founded the Mozarteum International Summer Academy in 1916. At the beginning only private voice lessons were offered within the premises of the Mozarteum. In 1925 Willy Schweyda gave the first violin class. Classes in piano, composition, conducting and opera were added in 1929 thanks to the sponsorship of American Julian Freedman.