The audio came from a video Glass had shot for Current TV two years earlier (and posted by PRI on YouTube), in which Glass talked more expansively about the creative process.
BuzzFeed recently asked Glass what it was like to watch this all go viral without any input or effort on his part. Here is his response, in his own (lightly edited) words:
"It’s just so random.
"I don’t feel proud of it, do you know what I mean, the way I feel proud of episodes of the radio show that I killed myself on.
It feels like, 'Oh, I said something, and it just got printed on a billboard without me knowing, and I guess that's OK with me.'
Any time that I Google my own name or search Twitter on my own name, a fair percentage of what's being written about me is just people on the internet passing around those videos. Visibly. Some days, it's more people talking about those videos than talking about the radio show."