Herbie Hancock Joins Luc Besson's 'Valerian'

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Herbie Hancock performs at Arena Santa Giuliana during Umbria Jazz Festival in Perugia, Italy.

Rihanna and Cara Delevingne are already cast in the sci-fi epic.

Herbie Hancock has joined the cast of Luc Besson's sci-fi epic Valerian.

The French director announced the news on Instagram Saturday morning, informing followers that "Herbie Hancock is a legend. His music was my only friend at 14... I learn so much listening this genius... I'm proud to have him for a role in #Valerian."

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Though the Grammy and Oscar-winning musician's role is unknown for the graphic novel adaption, if it's anything like Rihanna's role, according to the director, it will be "big."

Hancock joins the "Diamond" singer, Ethan Hawke, Cara Delevingne and Dane DeHaan in the film, who is set to play the titular character, a space and time-traveling agent from a futuristic Earth, with Delevingne starring as his red-haired companion, Laureline.

Production is slated to begin at the end of 2015. Besson is writing and directing the film with Virginie Besson-Silla as producer on of EuropaCorp, which is financing, producing and distributing the sci-fi film.

Valerian is due for release in theaters July 21, 2017.

This article originally appeared on THR.com.