The muse behind Steve Grigg’s musical project is a brick, six-story, century-old building that stands in what used to be Seattle’s Japantown. The Panama Hotel, on the corner of Sixth and Main, remains a working hotel. But the historic building is also a time capsule. It features belongings left behind by Japanese Americans who were forced into internment camps during World War II. Griggs’ project, called “Panama Hotel Jazz,” weaves in music with narration to tell the story about the