I couldn’t choose, so you get a few minutes of a live performance by a Japanese electropop trio and then an hour-long talk from one of the most influential thinkers in consumer robotics today.
According to this WIRED piece, the Perfume video below was filmed in real time (with a large tech team and a 3D scan of the venue pre-made). Still, none of the effects you see are post-production. The tune starts near the 1:33 mark but the set-up is interesting, too.
Here’s how it looked to a fan at the venue. The video from the stream is cooler, but the live effects aren’t bad and fit the music well.
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And, here is Cynthia Breazeal’s talk “The Personal Side of Robots” from SXSW Live: