SAN FRANCISCO —

The evening commute at Montgomery Station looks the same on this weekday. Workers are sitting down, checking their phones, waiting for their train to take them home. While they pass the time, sounds from one man's piano send them away on their journey home.

Mark Dyson usually rotates stations where he performs. Of course, he tries to pick the busiest ones so he can get the most tips, but skills on the keyboard are riveting.

"Monkey see monkey do," he said after being asked how he learned to play so well.

Mark is autistic and lives with Bipolar Disorder. He says he grew up in a large religious family in Ohio, and his relationship with his parents became difficult.

"This is the nature of what I am dealing with," he said after recalling a tense moment that led to him leav

See Full Page