“The master of ceremonies was "Cactus" Pryor, "the George Jessel of Texas"; he apologized to the chancellor "because they had been unable to find a way to barbecue sauerkraut." There was a Mexican mariachi band, square dances by the Billyettes, a precision dance team (not all that precise) from Fredericksburg High School and then the German carols sung by cowgirls - the St. Mary's High School choir in full cowgirl regalia: Stetsons, blue skirts, white blouses and red neckerchiefs - under the direction of a nun in head-to-tie black habit. They closed with "Deep in the Heart of Texas" - and that was in German, too. "Die Sterne bei Nacht sind gross und klar / Tief in das Herz von Texas..." After each couplet, the traditional four Texas claps. At the conclusion, a cowboy yell, echoed by the audience. Only after that did the explanation for the grand piano appear: tull, curly-haired Van Cliburn of Fort Worth, whom newspapers had been calling "the pride of Texas" ever since his victory in 1958 in the first International Tchaikovsky Competition in Moscow. The thunderous chords of the young virtuoso's selections from Beethoven, Brahms and other German composers filled the rickety little building.”
―
Robert A. Caro,
The Passage of Power