President Donald Trump briefly turned the newly renovated White House Rose Garden into an impromptu sound check on Tuesday evening, blasting Lee Greenwood’s patriotic anthem “God Bless the USA” through a recently installed speaker system, according to a pool report and witnesses on the grounds. A White House aide said the performance was a test run for an unspecified gathering that Trump has promised will be “the greatest event in the history of the White House.” The president personally controlled the playlist, underscoring his hands-on role in preparations. The Rose Garden patio, redesigned in a style reminiscent of Trump’s Mar-a-Lago estate and equipped with upgraded audiovisual gear, was completed earlier this summer. Tuesday’s music test was the first public use of the new infrastructure, but officials have yet to release details or a date for the forthcoming event.