Overview

• Mendes introduced Horan as “like an older brother” before they sang Horan’s 2016 hit “This Town” together.
• The duet mirrored a similar surprise in March 2024 when Mendes appeared onstage during Horan’s show at the same venue.
• Fan-shot videos captured the duo joking about having just minutes to rehearse their performance backstage.
• Horan flew in from Los Angeles after filming Battle rounds for Season 28 of NBC’s The Voice.
• Mendes’s tour continues in Amsterdam on Aug. 20 before a North American leg begins in September and Horan will return to tape the Knockout rounds later this month.