WATCH: Russell Crowe Sings “Folsom Prison Blues” with Jimmy Fallon

(NBC)

(NBC)

Russell Crowe stopped by “The Tonight Show” on Thursday, and he treated the audience to — of all things — a Johnny Cash classic.

The actor sang and played guitar on “Folsom Prison Blues,” accompanied by host Jimmy Fallon on the harmonica.

The result is quite the toe-tapper.

Check out the video below!

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Karen Brill