An actual roar moved through the crowd on Sunday night at the Long Center before bursting into near-rapturous applause for a bracingly intense, rollicking version of Dvorak’s “Carnival Overture,” by the Cleveland Orchestra.

Cleveland, one of the world’s top-tier orchestras was here to cap off the official end of the Menuhin International Violin Competition, and it was a momentous night — a momentous weekend — of music making, which put an exclamation point on Austin’s newfound infatuation with the young phemons of the violin world, who came from around the globe and played their hearts (and fingers) out.