And she has used them in her own research on the racial desegregation of classical music performance, searching concert programs from the 1940s and '50s to find African-American soloists, the repertoire they were hired to perform and the white musicians they played alongside.

WSJ: Philharmonic Unveils Trove Online

Glenn Gould became famous in the classical music world largely through his performance of an obscure group of pieces by J.

NPR: The Variations of Glenn Gould

Fred Child hosts the nationally broadcast classical music program, 'Performance Today.

NPR: Rafal Blechacz's Single-Minded Chopin

Paul, Minnesota, presents a diverse array of musical offerings, from pop and folk to award-winning classical music programs such as ' Performance Today' and ' Pipedreams.

NPR: Pierre-Laurent Aimard and the Art of the Etude

At the time of Gould's American debut in January 1955, the "Goldberg Variations" were mainly known to musicologists. (Gould too was unknown to American audiences.) But the 22-year-old Canadian pianist s performance was so energetic and captivating that he became a classical music superstar.

NPR: The Variations of Glenn Gould