 In the tradition of the cathedral rite at Hagia Sophia, there was a distinction between the leader of the right choir (Domestikos) and the leader of the left choir (Lampadarios).Still during the last centuries, the usual career was to start (after serving as Protopsaltes of other cathedrals) as the "Second Domestikos of the Great Church" who assisted the first, then to proceed in the office of the teacher, and later even to the Lampadarios, who often replaced the left choir as a soloist called "monophonares" (see Kontakarion), and finally this career was sometimes continued by the promotion to the "Protopsaltes or Archon Psaltes (ἄρχοντες ψάλται) of the Great Church" of the Ecumenical Patriarchate.In the Greek tradition, a chanter will often wear the "exorason", a black outer cassock with angel-wing sleeves.