Is note a common or proper noun?

The noun 'note' is a common noun as a general Word for a short written message or comment to a text; and a Word in music for a tone of definite pitch, a written symbol for the tone.

A proper noun is the name of a specific person, place, or thing; for example:

• Note Street, Hunters Hill, NSW Australia
• Blue Note Jazz Club, New York, NY
• Samsung GALAXY Note