"Loyal Brave True" is directed by Niki Caro, who also directed the upcoming movie.
It is one of two contributions that Aguilera makes to the movie's soundtrack. She also has an updated version of "Reflection," the theme from the original, animated "Mulan" in 1998. That song was Aguilera's first big hit and helped launch her career.
The film's soundtrack will release on September 4 and also feature score composed and conducted by Harry Gregson-Williams.
See also: Live-action 'Mulan' will be released on Disney+ for an added fee
"Mulan" will be released on Disney+ with Premier Access on September 4.
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