The musicians who win the top prizes at major international competitions are, of course, some of the best players in the world. You would think that such prizewinning talents would immediately find themselves with a full schedule of recital dates and solo appearances in the world’s top venues. But in fact, most prizewinners quickly find that their careers get only a minimal boost from even the most celebrated competitions. Case in point: Van Cliburn gold medalists Olga Kern and Stanislav Ioudenitch, currently touring such classical music meccas as, um, Kansas City.