Adsense isn't being very contextual for me

I just installed adsense about an hour ago.
My sites music based. Now with a skyscraper on a page with lots of mention of DIY recording, microphones e.t.c. I'm getting nothing but PSA, in fact my entire sites getting PSA, the ads in the forum are PSA Is there a certain amount of time I have to wait before google gets the keywords or is it just being fairly poor with my site?
I've tried moving the ad around the page and in different formats but it's still the same.

 

Yeah, you need to wait for the Adsense to propagate. It typically happens within 48 hours.

 

Ah good good. I was pretty impressed how fast they verified me. It was under an hour I don't know how regular that is with them but I expected to have to wait alot longer.
Do the adsense reports update every hour?

 

I find they are usually updated within an hour or a little more.
But yes definately give it some more time for the googlebot =)

 

By adsense reports, do you mean when you are logged into your Adsense account and checking to see how much you are making?