Paul McCartney performs at the Coachella Valley Music & Arts Festival in California in April. AP file photo

By Jason Fink

Paul McCartney’s about to get back to where it all began.

The rocker helped usher in the era of stadium concerts when he and the rest of the Beatles performed at Shea Stadium 44 years ago. Next month, McCartney, now 66, will return to Flushing for the inaugural concert at the Mets’ new home, Citi Field.

“To be the first to play this ballpark is incredible,” McCartney said in a statement Wednesday. “I am really looking forward to a buzzing show.”The July 18 and 19 appearances will serve as a bookend to his cameo on stage with Billy Joel last summer for the final concert at Shea.

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Tickets go on sale at 10 a.m. June 15 either online at www.507TIXX.com or by calling (718)-507-8499.

Ticket prices have been set, according to the Mets.

The Fab Four’s Aug. 15, 1965 show was the first rock concert at a major stadium, drawing 55,000 fans and setting a precedent for the large-scale, outdoor summer concerts that have become a staple of pop music.

“There’s no more appropriate artist in the history of rock and roll to play the first concert at Citi Field,” said Jeff Wilpon, the Mets’ chief operating officer.