Justin Bieber plays an unannounced acoustic set in MacArthur Park, Los Angeles

In late September 2026, Justin Bieber appeared without warning at MacArthur Park, a well-known public park west of downtown Los Angeles, and played an informal acoustic set. Reports place the session on Tuesday, 22 September, though at least one outlet gave a different day.

Bystanders filmed the singer performing alongside a small group of musicians, and the clips spread quickly on social media. Accounts of the set list differ. Some reports said he sang material from his 2025 album Swag, while others mentioned other songs. It was not clear why he chose that location.

The performance drew attention beyond music. Nathan Hochman, the Los Angeles County district attorney, wrote that Bieber playing in MacArthur Park was "progress", pointing to efforts to improve a park long associated with drug activity. Police and federal agents had carried out an operation there in June.

The low-key show set the tone for later episodes in which Bieber surfaced at small, unpromoted gigs around the city.