Invisible System is the pseudonym for the UK & Africa producer Dan Harper whose music involves a fusion of Malian, Ethiopian, dub, reggae, techno, trance, drum and bass, jungle, acid, psychedelic, folk, post-punk, goth and rock with traditional and griot/azmari. Guest musicians have included Mahmoud Ahmed,[3] Captain Sensible, Aklilu Bedane,[6] Justin Adams, Dubulah, Juldeh Camara,[5] Desta Fikra,[2] Ozric Tentacles,[7] Tsedenia Gebre Markos, Bahta Gebre Hiwot, Simon Hinkler (The Mission), Zion Train, Eat Static, Loop Guru, Baka Beyond, Hilaire Chabby (Baba Maal), Sidi Touré, Adama Yolumba, Astou Niamé Diabaté, Kalifa Koné etc Much world chart success, international and national review success in the music press, newspapers and much radio play from BBC to international.