Depending on how they are constructed, their design and the space available, traditional conservatories can and have been used and adapted for a range of purposes.
Besides being an additional dining and entertainment room that connects closer to nature than the rest of the house, conservatories have been used as home offices, gymnasiums and music practice rooms, and this latter function has a surprisingly long history that may have shaped the reasons why we use the word conservatory.
In the world of music, a conservatory is another term for a music school and is an educational institute that teaches people how to perform and compose music to a high level, with lessons often either taught by or with a strong connection to professional musicians.
The term itself is a variation of the Italian term conservatorio, which has been used since the Renaissance period to describe an orphanage, and often more specifically one linked to a hospital. Some music conservatories are even called Ospedales for this very reason.
Whilst linked to religious institutions, the conservatori were largely secular and took in orphans of all types to teach them how to play and perform music, with the expenses funded by the state. The orphans, or foundlings, were called the “conservati”, or saved.
This made them different from choir schools, which were inherently connected to churches, and universities of the era, where only musical theory was taught.
This model was adopted and expanded in Paris in the midst of the French Revolution, with the Conservatoire National de Musique et d’Art Dramatique becoming the first wide-scale secular music school, with most others following it copying both the style and the name.
So, when people adapt their conservatories at home to serve as a practice space for singing, dancing or playing an instrument, they were following a tradition over five centuries old.