Metallica added two more excellent covers to their arsenal last night at the annual Bridge School benefit, joining host Neil Young on Buffalo Springfield's "Mr. Soul" and tackling the Clash's "Clampdown" all by themselves.

You can watch fan-shot video of "Mr. Soul," originally written by Young for the 1967 album Buffalo Springfield Again, and "Clampdown," taken from the Clash's 1979 masterpiece London Calling, below. "That's one of those songs that would not leave my head," singer James Hetfield raved after the performance. "Once we started rehearsing that song, it was stuck in my head for days."

Metallica, performing acoustically as is the tradition at the annual Bridge School benefits, also broke out their covers of Deep Purple's "When a Blind Man Cries" and the Dubliners / Thin Lizzy / traditional Irish song "Whiskey in the Jar." Of course, they played some of their own hits as well, including "Enter Sandman" and "Seek and Destroy."

The Bridge School Benefit Concert is an annual, all acoustic, non-profit charity event held every October at Shoreline Amphitheatre in Mountain View, California. All proceeds directly benefit the operations of the Bridge School, which helps individuals with severe speech and physical impairments achieve full participation in their communities.

Metallica's long-awaited new studio album Hardwired... to Self-Destruct hits stores on Nov. 18. The band has released two songs from the record so far, "Hardwired" and "Moth Into Flame."

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