L-Acoustics Powers PSY’s Summer Swag Spectacle When PSY unleashed Gangnam Style in 2012, he didn’t just dominate YouTube—he rewired the global pop circuit. Fast-forward to today, and his annual Summer Swag tour has become a cultural juggernaut in its own right, packing 35,000-capacity stadiums across South Korea for four-hour water-drenched extravaganzas