If you were one of the lucky ones who witnessed Radiohead’s Thom Yorke and Johnny Greenwood perform 15 Step with the USC Marching Band at this year’s Grammy Awards, you witnessed sheer music genius. It was undoubtedly one of the boldest and most riveting performances I’ve seen in quite a while. I found a Youtube video documenting a bit of the preparation, rehearsal, and backstage goings-on that went into this wonderful performance. It’s pretty interesting. Also included after the jump is a video of the performance itself from the Grammys.

[youtube]http://www.youtube.com/watch?v=8GZAKlU8VXU[/youtube]

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