Director Emmett Malloy's documentary "Big Easy Express," which chronicles the throwback train tour of bands Mumford and Sons and Edward Sharpe & the Magnetic Zeroes, closes the South by Southwest Film Festival and Conference, but it might not be the most anticipated music-related film at the festival stuffed with great music movies.

That honor likely goes to Kevin Macdonald's "Marley," the first film ever authorized by late reggae legend Bob Marley's family. The movie made its world premiere at the Berlin Film Festival in February and will make its North American premiere in Austin. With interviews from family, friends and musicians, along with concert footage and rare recordings, the film from "The Last King of Scotland" director sheds light on the myth and the man who died of cancer at the age of 36.

Charismatic frontman James Murphy saddened a devout and increasingly wide fan base when he decided to end the decade-long run of his band LCD Soundsystem. "Shut Up and Play the Hits" goes behind the scenes as Murphy prepares for the band's final show and looks into the future of life after LCD Soundsystem.

Jay Bulger's documentary, "Beware Mr. Baker," chronicles the life and times of former Cream and Blind Faith drummer Ginger Baker, who survived decades of heroin abuse and five marriages. Sixto Diaz Rodriguez had an incredibly curious career. After releasing two albums in the states in the early 70s, the musician simply known as Rodriguez disappeared. Decades later his career experienced a resurgence in a surprising place -- South Africa. "Searching for Sugar Man" from Swedish director Malik Bendjelloul tells the story of Rodriguez's fascinating journey from obscurity to unlikely fame.

Musical dynamos with very different careers, the massively influential Paul Simon and the late-blooming soul sensation Charles Bradley, are subjects of documentaries "Under African Skies" and "Charles Bradley: Soul of America."

Two bands formed in the '70s with legacies that endure today, power pop pioneers Big Star and D.C. punk icons Bad Brains, also receive the doc treatment with "Big Star: Nothing Can Hurt Me" and "Bad Brains: Band in D.C." A restored print of 1968's animated "Yellow Submarine" will give audiences a chance to take a trippy ride on the nostalgia train with the Beatles.

"Rock 'N' Roll Exposed: The Photography of Bob Gruen" from British director Don Letts relies on interviews with music industry titans to give perspective on the work of one of rock's preeminent photographers and the man who took some of the most famous photos of John Lennon.

If all the movies don't satisfy your jones for the alchemy of film and music, the film conference gets in on the combination as well with a conversation with "Drive" composer Cliff Martinez.