I was lucky enough to study with John Stowell just a couple times during his visits to USC in the mid '90's.  He's one of the most innovative, harmonically brilliant, and melodically gifted guitarists I've ever had the pleasure of hearing.  Ellen Johnson is a woman with a saxophone lodged in her vocal chords.  She is one of the few vocalists instrumental jazz musicians consider "on the level".  She's got chops.  The two of them will deliver a performance of brilliance rarely seen in our little corner of the world.  Do yourself a favor.  Buy a ticket.  Go to this show.  If I'm lucky, I might get to play a tune or two with them.