There are multiple artists called Cathedra. 1. Cathedra is an experimental/ambient/noise project of Mark Crumby, who has also recorded as Antechamber, Binary, Codex Empire, Dust Orchestra, Impulse/Jara Discs, Ma\Hk, Mahk Rumbae, and Toxic Frequency. 2. Cathedra (stylized as CA†HEDRA or CATHEDRA) is a witch house project from Mexico fronted by Eduardo Fabela. CA†HEDRA’s first EP 5U1C1D3 was released in October of 2013 with a mix of dubstep, witch house, and slow, aggravated synths.