Oct 2, 2026 · 21 min
Ragtime pianist tracks four symphonies inside his mind
A 4-Track Mind
Bob Milne’s unusual musical perception tests the limits of memory, attention, and what neuroscience can explain about human ability.
- 1Bob Milne can play complex ragtime while conversing and imagine several symphonies simultaneously.
- 2In an MRI experiment, Milne tracked four imagined symphonies while a professional conductor managed only one.
- 3Milne experiences music as emotional, spatial, three-dimensional imagery that recorded sound cannot reproduce.
Don't miss
Inside an MRI, Bob Milne successfully tracks four different imagined symphonies and identifies the exact musical passages when tested.
The brief
Radiolab profiles Bob Milne, a ragtime pianist who can play complex pieces while talking and hear multiple symphonies in his head at once.
Neurologist Kerstin Bettermann compares Milne with a professional conductor inside an MRI, testing whether either can track several memorized works simultaneously.
The conductor manages one imagined symphony but becomes overwhelmed by two; Milne tracks four and identifies the precise passages being tested.
Milne describes separate orchestras moving through a three-dimensional mental space, with instruments changing volume as he shifts perspective.
The episode leaves his ability partly unexplained: imagined music feels richer than recordings, while his extraordinary mind remains woven into a modest life as a traveling ragtime performer.
Featuring
Bob MilneListen to the full episode and explore every guest, topic, and moment on PodLume.