Paul McCartney plays 'A Hard Day's Night' — for the first time in 51 years!

/ Source: TODAY

Paul McCartney kicked off his new tour with something old Wednesday night — a Beatles chart-topper he hasn't performed in over five decades.

The rocker opened his show in Fresno, California, with the John Lennon-penned classic "A Hard Day's Night."

Paul McCartney performs on Opening Night of the One On One Tour at Save Mart Center on April 13, 2016 in Fresno, California.Getty Images

When McCartney first announced his "One on One" tour dates in March, a statement on his website promised music spanning his "entire career" and including "no shortage of surprises."

MORE: Paul McCartney inducts Ringo Starr into the Rock and Roll Hall of Fame

He certainly made good on that vow with the unexpected performance.

McCartney last played the song at a 1965 Beatles concert, and he's never before played it as a solo artist.

Well, he's never played it in its entirety as a solo artist.

He joined Terry Bradshaw for a brief — and awkward — a cappella sample during the Super Bowl XXXVI telecast.

But "A Hard Day's Night" was hardly the only classic hit the 73-year-old included in his "One on One" set. According to Rolling Stone, McCartney played 38 songs in total, including other Beatles treasures, as well as memorable tracks from Wings and his solo catalog.

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