Commute music. Tuesday morning, I heard a man play "I Left My Heart in San Francisco" as a polka on his accordion, in the Civic Center BART station, in San Francisco. I imagined people dancing to it in polka dancing clothes--pants and shirts and circle skirts that are not shy. One has a repeated drawing of the Golden Gate Bridge about the size of a polka dot. Another has a pattern of alternating little cable cars and stars. Others have repeating hearts, red hearts, blue and green hearts with swirling fog, hearts covered with rainbow colors. Spending time with you is a spacious pot of gold.