. ♪ >> reporter: for the last 47 years, nor man scribner led this chorus.nded it calling it is k -- this singing group changed over the last five decades, he has remained the steadfast maestro in charge. ♪ >> reporter: like every december over the last 47 years, the group is rehearsing for the most popular yearly event. ♪ >> reporter: it's holiday concert of classics from around the world. ♪ >> that has to be a violent interruption. >> reporter: he takes the singers through warm-up drills, honing their voices to produce the sounds that brought them the highest accolades on road trips around the world. ♪ >> go up. >> reporter: they brought crowds to their feet in paris, london, rio and russia. >> we are going to begin with "glory to god in the highest." >> reporter: the greatest similar phonic masterpiece and pushing the envelope to include work by some of the world's contemporary composers. this year's concert features treasures from russia. as a gift from the russian ambassador, his legacy will be honored with special guest singers and the orchestra from r

days though he slowly recovered and in time produced a widely read account of his ordeal that "scribner's monthly" published for popular consumption. man as truman everts: my narrative is finished. the time is not far distant when the wonders of the yellowstone will be made accessible to all lovers of sublimity and novelty in natural scenery, and when that day arrives, i hope in happier mood and under more auspicious circumstances to revisit scenes fraught for me with such mingled glories and terrors. truman everts. [wolf howls] baker: every time i hear about the white people coming into our national parks and discovering something, i can almost see them standing there on top of this mountain, 3 or 4 of them saying, "from now on, we'll call those "mountains so and so because we're the first ones here." in the meantime, i can see my relatives hiding behind the rocks, looking at them saying, "wow. what are these "guys doing up here?" for us, it was almost kind of humorous because we've been there for thousands upon thousands of years, and it didn't need to be discovered. it was never lost.