The 38-year-old star performed "Ordinary People", "All of Me" and his new single "Surefire" while skillfully playing the piano, reported AceShowbiz.
Legend was in the station as he arrived on Eurostar train from Paris. The musician had just returned from France, where he had performed at Disneyland Paris as a part of the theme park's 25th anniversary celebrations on March 25.
Wearing camel-colored coat and shades, the singer also promoted his album and upcoming tour in between his performances.
"How are you doing, London? We've got a new tour, it's called 'Darkness and Light' tour, my new album is called 'Darkness and Light'," he told the crowd.
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