This is a trademark issue, not a copyright issue.
Do they have their trademark registered with the USPTO? You can search the PTO website,
www.uspto.gov, and see if they have a registered trademark. If they do, that gives them a lot of leverage.
As for whether you are "in the wrong" or not, well, that's question of fact for a court to decide. Trademark infringement is a "likelihood fo confusion" issue. Two of the main things the court will look to in order to determine likelihood of confusion is similarity of the marks and similarity of the markets. You are using a name essentially identical to theirs, and are in essentially the same market space -- these are two VERY large strikes against you.
The fact that the term "blunt force" is generic will only be useful to you if you either challenge their trademark or take this to court -- but although "blunt force" may seem to you as "generic" its almost certainly not "generic" in a trademark sense. "Books" as the name of a bookstore is generic; "Books" as the name of a gun shop is most likely not. Whether or not a trademark is generic is not as cut-and-dried as youmight think.
"But, to answer your point, I don't have the funds to go to court, but they probably don't either."
I wouldn't count on this. If they are actually a record company -- even a small one -- they very likely have an attorney on retainer to handle contract issues and the like who might be very interested in some trademark litigation to spice things up.
Finally, you mentioned that you are dealing with websites. If the record company has a registered trademark, or a registration in progress, they can go to ICANN and file a domain name dispute and sieze your domain name if they prevail-- and that really doesn't cost much at all.