ur.wikipedia.org/wiki/%DA%AF%D8%B1%D8%A7%D9%86%D9%B9_%D9%85%DB%8C%DA%A9_%DA%A9%D...

Authoritative film-reference sources identify Grant McCune as a special-effects / model-making figure, not a musician.

• The American Film Institute Catalog lists him under “ANIMATION | SPECIAL EFFECTS” and credits him as “Chief model maker” on Star Wars, “Miniatures supv” on Star Trek: The Motion Picture, and “Model supv, Visual eff crew” on Invaders from Mars.
• The Los Angeles Times obituary similarly describes him as an effects artist, says he was the chief model maker in the miniature and optical effects unit for Star Wars, and notes that he later founded a visual effects design company.

These sources consistently describe a career in film visual/special effects, directly contradicting the article's statement that he "was a musician."

The occupation field is contradicted by authoritative film-industry sources.

• The AFI Catalog categorizes Grant McCune under special effects and lists credits such as chief model maker for Star Wars and miniatures supervisor for Star Trek: The Motion Picture.
• The Los Angeles Times obituary calls him an effects artist and says he later ran a visual effects design company.

Because the documentary record places his career in visual/special effects work, labeling his profession as "موسیقار" (musician) is factually incorrect.