Hmm. A quick Google search for "Erection of the Heart" finds the same term in a medical text from 1685 (if my Roman numerals aren't letting me down).
I doubt that's where either of them found it, though.
> I have no doubt Jim was familiar with Bangs' work-- Jim's
> a music fan and would no doubt keep up with a figure like
> Lester. Is this where Jim first heard the phrase? Or did
> he use it himself earlier and somehow influence Bangs?