Which innovative sustainable practice did Coldplay implement during their 2022 'Music of the Spheres' world tour that generated renewable energy during concerts?

The music industry has been evolving its approach to sustainability in recent years, with artists, labels, and festivals making significant changes to reduce their environmental impact. From vinyl production to touring practices, the industry faces unique ecological challenges. Test your knowledge about how the music world is addressing sustainability concerns and creating more environmentally responsible products and experiences.

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Kinetic dance floors that converted fans' movements into electricity
Solar-powered instruments that eliminated the need for traditional power sources
Wind turbines attached to stage equipment that powered the lighting systems
Water-powered cooling systems that generated electricity as they regulated temperature