Tone Science sub-label, from DiN records, continues to explore the world of modular synth music with Tone Science Module No#9 Theories and Conjectures (DiN#TS09). This volume kicks off with two pointillistic compositions from Loula Yorke and State Azure. The next pair of tracks from Theda Electronic Music and Swansither enter calmer, ambient territory. The mid-point of the album sees Sulk Rooms take us into darker territory with a drone based piece. The next three tracks from Tomorrow The Cure, JacqNoise and Alex Ball are rhythmically based with pure tones, deep bass and transient blips respectively. Finally Michael J. York closes out the album.