There are numerous artists known as Hammer: 1. Finnish NSBM band 2. British heavy metal/NWOBHM band 3. Polish thrash/heavy metal band 4. Argentinian thrash metal band 5. Italian heavy metal band 6. Bay-area groove rock 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.