It was an effort to emulate the creatively-spelled animal band names like the Beatles and the Byrds. However, the record company thought that was a bit too cute and told them to switch to the conventional spelling.
Officials determined that Metallica was "inappropriate" because it's the name of a heavy metal band and is too closely related to the word "metal." After an international outcry, Swedish officials reversed their decision two weeks later.
He repeated the stunt at the Monterey Pop Festival. In 2008, the scorched Fender Stratocaster guitar that Hendrix burned that night sold for more than $450,000 at auction.