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.

Read more about Hammer on Last.fm.