The band (Larry Mullen Jr. included) perform and shoot music video on Fremont Street ahead of their U2 UV: Achtung Baby residency at the MSG SphereU2 premiered a new, Las Vegas-inspired song titled “Atomic City” during a surprise pop-up concert/music video shoot Saturday on Sin City’s Fremont Street. Taking the stage two weeks before the band opens their U2 UV: Achtung Baby residency at the massive MSG Sphere, Bono and company performed the track a couple times during the show, which doubled as a music video shoot for the video’s rumored release later this month. “Atomic City” takes its title from Las Vegas’ nickname during the days of nuclear bomb testing in the 1950s, when tourism spiked both from gambling and the ability to view the tests in the desert outskirts of the city. Bono described the track as a “rock n’ roll 45 [rpm single] in the tradition of late-Seventies post-punk, Blondie, the Clash.” During the pop-up concert, Bono noted how the band previously “performed” on Fremont Street: They filmed their “I Still Haven’t Found What I’m Looking” video along the same road in April 1987 when The Joshua Tree Tour brought them to Las Vegas; acknowledging their history on Fremont Street, U2 also performed their stripped-down Songs of Surrender rendition of that song during the pop-up show. Notably, the video shoot featured the band accompanied by drummer Larry Mullen Jr., who will not be partaking in the MSG Sphere residency while he continues his recovery from back surgery; for the U2 UV: Achtung Baby shows, Dutch drummer Bram van den Berg will serve as his replacement. “The four of us recorded the song. Sadly, Larry Mullen Jr. won’t be with us at the Sphere,” Bono told the crowd, the Las Vegas Review-Journal reported. “He doesn’t listen to doctor’s orders. Neither do many of us. But he is here tonight … Give it up for Larry Mullen Jr.!” The group will kick off its residency on Sept. 29, with additional shows taking place on Sept. 30 and Oct. 5, 7, and 8. One day after the residency was announced, seven more concerts were scheduled throughout October. And a few weeks later, eight more shows were added in December, when the residency – as of now – comes to an end. “My hope is that this will be a kind of quantum leap forward in the sense of what a concert can be,” the Edge previously told Rolling Stone of the Sphere shows.

U2 this morning announced a five-date run in September and October for its new “U2:UV Achtung Baby Live at the Sphere” show, the much-anticipated concerts that will spotlight the band’s 1991 classic at the brand-new MSG Sphere venue in Las Vegas.

The shows — set for Sept. 29 and 30, and Oct. 5, 7 and 8 — will feature Dutch drummer Bram van den Berg sitting in for U2 co-founder Larry Mullen Jr., who will be recovering from surgery.

Update: The band has now announced 17 dates in September, October and November. See them all below.

Ticketmaster’s email to Verified Fan users suggests more shows may be added: “Should any new shows be added, you will automatically be registered for the chance to buy tickets to those dates.”

Tickets begin going on sale at 10 a.m. Eastern on Wednesday, April 26, with two pre-sales: one for U2.com subscribers and the other through Ticketmaster’s Verified Fan system.

Visit u2xsphere.com for ticketing details.

U2.com subscribers will be able to request tickets to three of the shows, but, if their request is confirmed, will only be able to buy up to four tickets to one of the performances, according to the band. Ticket re-sale also will be limited for GA floor seats, with U2 taking a page from The Cure’s recent anti-scalping efforts.

According to the details of the U2.com member pre-sale: