Paul McCartney is on a roll this week.
A day after performing at a New York City high school, the ex-Beatle surprised fans Thursday with an impromptu concert in Times Square.
McCartney announced the concert on Twitter and then arrived by taxi at the "Crossroads of the World" an hour later.
Despite the short notice, thousands of fans flocked to the busy midtown-Manhattan intersection for the lunchtime concert.
The 71-year-old rocker sang four songs fromfrom a trailer parked on West 46th Street and Broadway. The upcoming set, due out Oct. 15, marks McCartney's first album of original tracks since 2007's "Memory Almost Full."
He joked: "Let's do this the same time tomorrow."
On Wednesday, McCartneyfrom students at the Frank Sinatra High School in Queens. He was celebrating his second .