These classical pieces are public domain so it's completely legal to download the music here. Besides a wide variety of classical music downloads, you'll also find a large selection of free sheet music and free music theory textbooks available at Musopen. Types of Music Available at Musopen.
2. (foll by with) to associate (oneself) or be associated, esp as a subordinate or subsidiary; bring or come into close connection: he affiliated himself with the Union. n. a. a person or organization that is affiliated with another. b. (as modifier): an affiliate member.
An organization or organisation is an entity comprising multiple people, such as an institution or an association, that has a collective goal and is linked to an external environment. [citation needed]