Game of Thrones star Kit Harington appeared on The Tonight Show recently where he put his acting skills on full display while performing Train's "Drops of Jupiter."

For years, Fallon has been trying to launch a segment called "Straight Up Goes For It," in which the celebrity guest performs "Drops of Jupiter" on a whim. Everyone said no, until Harington showed up this week and really went for it. He doesn't know how to play piano, but he's such a good actor that you can barely tell he's faking it.

"The sketch has been our white whale. We've been pitching it for years," Fallon said. "We finally have someone who has the guts to do it. He doesn't play the piano by the way. And he doesn't really even know how to sing. But, he's doing it because he's cool and he's funny and he gets it." Here's the incredible video: