The splendid Proceedings of the Athanasius Kircher Society blog is having a music week (or, as they put it, Kircherian Harmonics Week). First up, the Arca Musarythmica: "a device by which a non-musician could compose a piece of four-part music using prearranged musical fragments". In other words - a hardware, not quite real time version of Ableton Live, from 1650 (really is spooky how much the top part looks like Ableton...) Then there's the Zadar Sea Organ, a huge pipe organ, played by the waves in Zadar, Croatia. Keep checking back for more. (Thanks, Kate!)