Which product innovation, first widely adopted on Broadway in the 1990s, revolutionized musical theater by allowing performers to sing and dance simultaneously without sound quality issues?

The performing arts industry has been revolutionized by numerous product innovations over the decades. From sound systems to lighting technology, these advancements have transformed how audiences experience live performances. This trivia question focuses on a particular product innovation that fundamentally changed how Broadway musicals are performed and experienced. Test your knowledge about the intersection of technology and theater production!

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Wireless microphone headsets
LED stage lighting
Computerized scene-change systems
Digital sound mixing consoles