Robert Hardy is not primarily known as a music artist; he was a distinguished British actor known for his roles in television and film, particularly for his portrayal of Siegfried Farnon in the BBC series "All Creatures Great and Small." He also had a notable presence in the theatrical world and appeared in various films, gaining recognition in roles such as the character Cornelius Fudge in the "Harry Potter" series. However, if you are referring to a musician named Robert Hardy, there is limited information available on an artist by that name in mainstream music history as of October 2023. If you meant a different artist or have more specific details, please clarify to provide the most accurate information. In summary, Robert Hardy the actor made significant contributions to television and film, but there is no prominent musician by that name widely recognized in music history.