Which famous performing arts venue underwent a revolutionary product design transformation in 2015 that included specialized acoustic 'blossoms' suspended from the ceiling that can be adjusted for different performances?

The architecture and design of performing arts venues significantly impacts both the audience experience and performers' capabilities. A well-designed theater or concert hall can enhance acoustics, sightlines, and create a memorable ambiance that becomes part of the venue's brand identity. This trivia question explores a famous venue redesign that revolutionized a historic performing arts space while maintaining its cultural heritage.

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David Geffen Hall at Lincoln Center, New York
Royal Opera House, London
Sydney Opera House Concert Hall, Australia
Elbphilharmonie, Hamburg