Buckley was considered one of the most promising artists of his generation when his debut album, "Grace," was released in 1994.
The film is being produced by Buckley's mother, Mary Guilbert, and Michelle Sy, a producer of the 1994 film "Finding Neverland." Jun, who is writing and directing the film, was nominated for the grand jury prize at the Sundance Film Festival for "Steel City."
Buckley drowned in Memphis.
Notable deaths of 2014 [PHOTOS]