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.

She reported that a spirit with long white hair and a flowing black cassock appeared and told her he was a composer and would make her a famous musician one day.

[1] Then in 1964 Liszt supposedly renewed contact and Brown began transcribing original compositions she said were dictated to her by great musicians of the past.

Even if the pieces dictated to her by dead composers are not masterpieces - although some of them are very nice works - she has had no technical training in composition and could not possibly produce pastiches like, say, those by Joseph Cooper in his TV programme "Face the Music".

[5] Professor Ian Parrott[6] was also a supporter, and participated in a documentary, and wrote Rosemary Brown's obituary for the Guardian: '…Grübelei (meditation), partly dictated under the watchful gaze of BBC reporter Peter Dorling and a television studio crew, is undoubtedly a most spectacular and unusual piece.

It has strong harmonies, cross-rhythms and occasional instructions in French - a point conferring authenticity, but difficult to fake.

Leonard Zusne and Warren H. Jones in their book Anomalistic Psychology: A Study of Magical Thinking (1989) noted that "Brown wrote hundreds of pieces of music dictated by the various composers.

"[7] Professor of psychology John Sloboda wrote that Brown's music offers "the most convincing case of unconscious composition on a large scale.

[13] Similarly Alan Rich, music critic of New York magazine, having heard a privately issued record of Brown's piano pieces, concluded that they were just sub-standard re-workings of some of their purported composers' better-known compositions.

Concert pianists Peter Katin, Philip Gammon, Howard Shelley, Cristina Ortiz and John Lill have all performed her music.