Glenn Gould was said to sometimes analyze and completely memorize works from the sheet music alone before playing them at the piano. His father recalled an instance of him learning an entire concerto from the score alone and then playing it from memory the first time, and Bruno Monsaingeon saw him play an entire movement from memory of a Mendelssohn string quartet after hearing it once on the radio (quoted in Bazzana's book on Gould).

That pales in comparison though to the fourteen-year-old Mozart transcribing from memory after once hearing the secret Miserere of Allegri, a dense polyphonic work that was performed only in the Sistine Chapel and was forbidden by the Vatican to be transcribed or reproduced under penalty of excommunication.