“Quick, wrap a towel around your wrists! The new Jana McCall album is here, and that means you'll want to stick around for at least another 45 minutes. That opening sentence might seem tasteless, but if it does, it's probably because you aren't familiar with the sleepy, mournful tunes that are Jana's stock in trade. Think of it as simply addressing her target audience. Fortunately, with *Slumber*, ”