Since 2003, the black hole at the center of the Perseus galaxy cluster has been associated with sound. This is because astronomers discovered that pressure waves sent out by the black hole caused ripples in the cluster's hot gas that could be translated into a note—one that humans cannot hear, some 57 octaves below middle C. Now a new sonification brings more notes to this black hole sound machine. This new sonification—that is, the translation of astronomical data into sound—is being released for NASA's Black Hole Week this year. In some ways, this sonification is unlike any other done before...