The fine art of vamping

["Scorcher" <scorcher@xxxxxxx>]

When most of us think of fine harmonica playing, names like Adler, Bailey,
Bonfiglio, Clarke, Cotton, Horton, Portnoy, Paparozzi, Piazza, Sebastian,
Shackner, Smith, Terry, Walter, Wells, Williamson Wilson, and Wonder (and a
legion of others) come to mind, right?

Well, most of these maestros (most of the time) play accompanied music. Even
if they play(ed) the harmonica as a "featured solo" instrument, their
accompanists fill-in the parts that they're not playing. In fact, the way a
harmonica is ~usually~ played sounds a little incomplete without a guitar,
at least.

But there is a style known as vamping that is intended to be UNaccompanied.
In fact, an accomplished vamper can do some pretty impressive things with a
harp all by him/her-self!

(And wasn't the Richter tuning scheme ~designed~ for vamping?)

So who are the skillful vampers today? Where can I look to learn more about
playing a harmonica as a purely solo instrument?
Could any of y'all suggest some study / listening material?