By Jessica Goodman
Updated July 13, 2015 at 12:22 PM EDT

Marvel’s Fantastic Four is due out Aug. 7, and director Josh Trank is hyping the film up to be a “massive, huge, multipower slugfest.” Over the weekend, he also spilled a secret on Twitter and revealed that Run The Jewels’ El-P composed music for the film’s end credits. “One of my heroes, @therealelp, made a incredible instrumental piece for our end credits,” he wrote. “I couldn’t be any more excited.”

El-P responded: “Oh sh-t cat out the bag!!

El-P is best known as one-half of hip-hop group Run The Jewels, whose most recent album, Run The Jewels 2 was one of EW‘s best albums of 2014.

Fantastic Four stars Michael B. Jordan as Johnny Storm (Human Torch), Miles Teller as Reed Richards (Mr. Fantastic), Kate Mara as Sue Storm (Invisible Girl) and Jamie Bell as Ben Grimm (The Thing). Most recently, the cast visited EW‘s lounge at San Diego Comic-Con, where things got a little … personal.

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