Irish rock band U2 returned to Mount Temple Comprehensive School in Dublin on September 25, 2026, marking 50 years since the group first came together as teenagers. Bono, The Edge, Adam Clayton and Larry Mullen Jr performed a surprise concert for current students and staff.The special homecoming took place exactly five decades after Mullen placed a handwritten notice on the school's board looking for musicians. The meeting eventually brought together the four members who would go on to form U2 and become one of the world's best-known rock bands.Key HighlightsU2 returned to Mount Temple Comprehensive School in Dublin after 50 years.The band performed for around 1,000 students and staff.Larry Mullen Jr had posted a notice seeking musicians at the school in 1976.The set included I Will Follow, Vertigo, One and With or Without You.U2 also performed Silencio, their new single, live for the first time.The band is preparing to release its new album Carnaval De Luz in November.Why Did U2 Return to Mount Temple School?U2 returned to the Dublin school to celebrate 50 years since the band first came together.On September 25, 1976, a teenage Larry Mullen Jr put a notice on the Mount Temple school noticeboard seeking musicians to form a band. The musicians eventually included Bono, The Edge and Adam Clayton.The group gathered at Mullen's home in Dublin and began the journey that would eventually lead to U2.What Happened During the U2 Surprise Concert?The performance took place in the schoolyard at Mount Temple Comprehensive School, with around 1,000 students and staff watching the band.U2 opened with Out of Control, a song from their early recordings, before performing several major songs from their career. The set included I Will Follow, Vertigo, Beautiful Day, One and With or Without You.The band also performed Silencio, giving the new song its first live performance.Which Songs Did U2 Perform?The anniversary performance brought together songs from different stages of U2's career.The reported set included:Out of ControlI Will FollowVertigoBeautiful DaySilencioOneWith or Without YouYoung musicians from Music Generation also joined U2 for One. The programme is supported by U2 and works to provide music education opportunities to young people in Ireland.What Did U2 Say About Returning to Their Old School?The members reflected on the significance of returning to Mount Temple five decades after their teenage years.Adam Clayton said the visit reminded him of how he felt as a teenager, while The Edge described the experience as "extraordinary" and "very moving". Larry Mullen Jr said it was remarkable that the four musicians were still together after 50 years.Bono also spoke about the importance of education and the role Mount Temple played in bringing the band members together.What Is U2's New Album Carnaval De Luz?The school performance came shortly after U2 announced Carnaval De Luz, their first album of new material in nine years.The album is scheduled for release on November 13, 2026. Its new single Silencio was released ahead of the album and received its first live performance during the Mount Temple concert.The album follows Songs of Surrender, which was released in 2023 and featured re-recorded and reimagined versions of songs from the band's catalogue.Why Is Mount Temple Important to U2?Mount Temple Comprehensive School is closely connected with the band's origins.In September 1976, Mullen's notice seeking musicians brought together the teenagers who would eventually become U2. The school therefore became an important part of the band's early history.The return also recreated the connection between U2 and a new generation of students, with the band performing in the same school environment where their musical journey began.Timeline of U2's JourneySeptember 1976: Larry Mullen Jr posts a notice at Mount Temple seeking musicians.1976: The teenagers who would become U2 begin playing together.1979: U2 release their early recording U2-3.1980: The band releases its debut album, Boy.1987: The Joshua Tree helps establish U2 as international stars.September 25, 2026: U2 return to Mount Temple for their 50th-anniversary performance.November 13, 2026: Carnaval De Luz is scheduled for release.What Happens Next for U2?U2's return to Mount Temple comes as the band begins a new chapter with Carnaval De Luz.The 50th-anniversary performance connected the group's early history with its current music, giving students and staff at the Dublin school an opportunity to see the four original members perform where their journey began.With the new album scheduled for November, the Mount Temple appearance also served as a celebration of U2's five decades together and a look ahead to their next musical release.