A 4-Track Mind
Oct 2, 2026 · 21m
Summary
This episode features a Radio Lab classic about Bob Milne, a ragtime pianist who can mentally hear and track four full symphonies simultaneously. Neurologist Kirsten Batterman tested his ability using an MRI, confirming he can accurately recall complex pieces while a control conductor failed. The story explores how Bob’s unique emotional and spatial visualization of music allows him to process multiple streams of sound without interference.
Topics discussed
AT&T iPhone 18 Pro sponsorship
Introduction of Anisa and the fanny pack concept
Design details of the Radio Lab fanny pack
Join the Lab membership promotion
Lulu introduces the '4-Track Mind' episode
Jad and Robert introduce Bob Milne
Bob's background and love for ragtime
The challenge of playing multiple rhythms
Bob's claim of hearing multiple symphonies
Skepticism and the need for a test
Setting up the fMRI experiment and controls
Single-symphony tracking results
Multi-symphony task: Conductor fails
Bob successfully tracks four symphonies
Explanation: Emotional connection to keys
Capital One sponsorship and Sl Advice
Explanation: Visualizing orchestras in 3D
Bob's immersive auditory experience
Bob's lifestyle and current projects
Outro, credits, and funding acknowledgments
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