Unrelated Adsense

I have a dillema.

I have adsense on my pages but they don't show ads the page is optimized for.
Let's say it's about 'Eminem songs'.
The page is optimized for 'Eminem songs' but the Asense shows ads for free music downloads, songs, etc, but nothing to do with Eminem.
If I type 'Eminem music' or 'Eminem songs' i get a lot of adsense results, so they are there. It's just that they don't show up on my page.

I even simplified Metatags Keywords to have only 'Eminem songs', but still the same problem.

Btw, KW density for 'Eminem' is about 5% and 'songs' is about 4.5% and they are the highest on the page.

Anyone has any ideas what the problem might be?
Greatly appreciated.
Max

It isn't that the ads aren't related. I would call them unrelated if they were about tractor pulling but ads about music go hand in hand with a page about a musician.

The other big area seems to be the url. Do you have eminem in the url? Its hard to truly assess why the ads are popping up rather than strictly eminem ones.

I would start here:
http://www.digitalpoint.com/tools/adsense-sandbox/
and see if ANY eminem ads show up. You can then tweak the pages in real time to dial in the ads you want to display (to a point)

Keep in mind it may take your site over a week to show the same ads that are displayed in the sandbox though.

The title is very important, so make sure you have "Eminem songs" at it.

Thanks for all your responses.
Yes, The page is 'eminem-songs.htm' and the h1 tag is the same.
I changed the meta keywords to just 'eminem, songs' and the results are a little better but still not exactly about the title.

I've got similar problem. A month ago launched plant related site (flowers, plants, houseplants, garden etc). When I hit http://www.site.com it showes ads about recycling instead of plant topic. But when entering http://site.com ads are correct. Very weird. When looking into logs Adsensebot is visiting me regularly.

I wonder if the bot also looks at off-page factors (major speculation), i.e. not only the page's content itself.

I just put up a new page and I put some adsense on it. The page shows "reasonable" ads, but mediabot has NEVER visited it. I wonder where it went to get info on that page: I reckon it knows about the (rest of the) site and just takes a wild stab at it