Nearly two years ago, Google initiated the world’s first online collaborative orchestra, which we featured as one of three fantastic examples of orchestra innovation. They invited the world’s best amateur classical musicians to audition for 90 spots on the YouTube Symphony Orchestra.

Last year, the YouTube community, with the help of leading orchestras around the world, selected 101 musicians from 33 countries to perform in an extraordinary concert at Sydney Opera House, streamed live on YouTube. The complete concert, running close to three glorious hours, is now available online and is an absolute force of collaborative magnificence.

On the project page, you can explore the global winners by instrument and location, and play with Experiment — an innovative augmented-reality musical instrument. (Get the marker here.)

Combined with Eric Whitacre’s virtual choir, the YouTube Symphony bespeaks the incredible potential of technology-enabled collaborative creation, one of those things that make us thrilled to live in the era we’re living in.