Answer: 19th Century
More information: When Antoine-Joseph "Adolphe" Sax invented the saxophone in the mid 19th century, he intended it to be used for both orchestral and military purposes. And while it never took off as a mainstay orchestra instrument, the saxophone has been utilized regularly during the classical muiscal period in general.
Did we miss something? Is the answer wrong? Please, let us know about it through our feedback box