Just finished reading The Cello Suites by Eric Siblin about Bach and Pau (Pablo in Spanish) Casals. It even has reference to the Arxiu in Sant Cugat that holds many of his papers and effects.
It's an amazing story about how Pau discovered the suites in an old Barcelona music store and was one of the people most responsible for making them world famous.
In case you were wondering, one of the main motivators for building the Arxiu was to house "Els papers", which had been confiscated by Franco and stored in the archive in Salamanca. The papers are now safely back in Catalunya.