The people who support the artists are the agents, manufacturers, retailers of music related goous, publishers,
and community volunteers.

The above statement is false.

The people who supports an artist are referred to as the patron of an art. A patron of an art also donates money to several art organizations.The patron of an art provides financial support to the artist. Such person shows appreciation for the work of a particular artist and ensures that such artist is supported.It should be noted that manufacturers, retailers etc do not usually support the artists.

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That would be true i believe