So Jackson stood perched on his lunch break, high up on the corner of a construction site where he works.
He is urging people down below to sign an online petition that hopes to get the Showbox designated as a historic landmark.
Jackson recognizes the irony. Though he's a construction worker who benefits from the city's building boom, he also wants people to rethink how quickly Seattle is changing.
“If we keep taking away our historical monuments,” Jackson said. “Pretty soon we're not going to have anything left.”
Jackson said he plans to play the sax to save the Showbox every Saturday during his lunch break.