There are numerous artists known as Hammer: 1. British heavy metal/nwobhm band 2. Polish thrash/heavy metal band 3. Argentinian thrash metal band 4. Italian heavy metal band 5. Bay-area groove rock band 6. Finnish nsbm band 7. Japanese hardcore band 8. South Korean nu-metal band 9. British grime emcee 10. 2 albums ("Black Sheep" & "Hammer") released by Jan Hammer in the late 1970s under the name Hammer. 11. Hammer was also used as a pseudonym by MC Hammer.