Synæsthesia is an incarnation of Front Line Assembly (FLA) members Bill Leeb and Rhys Fulber. It is one of several including: Pro>Tech, Equinox, Intermix, and Delerium in addition to FLA. Synæsthesia is probably the most strictly ambient of all these groups. The music consists almost entirely of long minimalist instrumental stretches. Its closest comparison to other Leeb/Fulber projects would likely be Future Primitives by Intermix, or Spiritual Archives or Stone Tower by Delerium. Stylistically this incarnation appears to be a continuation of the Delerium sound from these albums, as Delerium itself became more dancy and incorporated vocals. The monks chanting in catacombs remained with Delerium, but most of that group's ambiance seems to have moved into Synæsthesia.