A few bumps in the road

At some point I believe I got some new neighbors in my 'hood. I haven't met said people. I'm basing this belief on changes in behavior.

Two things, mainly:

1) some jackass who practices his or her clarinet late at night

2) people who like to talk... loud... late at night

I have some other noisy neighbors (including one guy who has an amusing, braying laugh) but these new elements are cutting into my sleep time whereas the regular noisy ones tend to shut down earlier.

What to do? What to do?

Where did I put that voodoo kit anyway?