The 2004 Migration Music Festival took as its theme "Loud and Free," gathering together socially and politically involved musicians from all over the world such as the Japanese band Soul Flower Mononoke Summit.
2004 年的流浪之歌音樂節，便以「放聲・自由」為題，引介來自世界各地，以音樂介入社會與政治議題的樂手。