In this article, the author describes Music from the Centre of the Earth, a series of three electronic music installations deploying underground loudspeakers in various configurations. The works described are Notes from Underground, a tape piece realised in conjunction with Melissa Gould's light installation Floor Plan; The Magnetic Garden, a collective musical earthwork incorporating underground sound chambers and musics emulating biological time: and The Listening Well, an interactive listening and performing space centred around a well.