Question: How did both Rosemary Brown and Robert Schumann contribute to musical pieces?
Sentence (from "Rosemary Brown (spiritualist)"): She created a small media sensation in the 1970s by presenting works purportedly dictated to her by Claude Debussy, Edvard Grieg, Franz Liszt, Franz Schubert, Frédéric Chopin, Igor Stravinsky, Johann Sebastian Bach, Johannes Brahms, Ludwig van Beethoven, Robert Schumann and Sergei Rachmaninoff.
Relevant evidence: No