What a surprise!

To celebrate the release of his new album, Wonderful Crazy Night, earlier today, Elton John performed an impromptu concert at London's St Pancras train station!

"Surprise! I popped into St Pancras International to christen the Yamaha piano which I donated to the station,” the 68-year-old singer captioned a photo on Instagram of his Thursday, Feb. 4 performance. “Now everyone can have a play.”

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He later shared another snapshot of the donated piano with the caption, "My gift is my song and this piano's for you." The pic additionally shows the inscription — “Enjoy this piano, it’s a gift!” — Elton wrote on the instrument after his concert.

Watch Elton's surprise performance in the video below!