Elton John plays piano for London commuters

How would you feel about an impromptu piano performance to brighten up your dreary commute?

Not so enthused? What if that performance was by Elton John?

That's exactly what happened to London commuters traveling through St. Pancras International station. John sat in front of a piano in the middle of the station and played a brand new Yamaha piano that he donated to the station.

He wrote on Instagram, "Surprise!! I popped into St Pancras International to christen the Yamaha piano which I donated to the station. Now everyone can have a play."

He also wrote on top of the piano, "Enjoy this piano. It's a gift. Love, Elton John."

He captioned a photo of the piano on Instagram: "My gift is my song and this piano's for you," a reference to lyrics from "Your Song" that say, "My gift is my song and this one's for you."

A witness told the Guardian that John did not sing and only played for about five minutes before leaving. He was also seen greeting a British transport police employee, and giving the man a kiss on the cheek and an autograph.

John will appear on James Corden's "Late Late Show" on Super Bowl Sunday for what's sure to be a legendary edition of "Carpool Karaoke."

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    Andrea is an entertainment producer at CBSNews.com