The entire Fringe team is seen here. It's an image from the episode "The Firefly.'
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Walter meets a musical idol on the episode "The Firely." It's the first Fringe episode of 2011.
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You're looking at a photo from "Firefly." It's the first Fringe episode of 2011.
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Fringe Season 3 Episode 10 Quotes

The Observer: "It must be very difficult."
Peter: "What?"
The Observer: "Being a father."

Peter: "Walter, are you all right?"
Walter: "If all right means despondent, then yes."