Sultan Selim III was concerned about the lack of a comprehensive notation system for music and encouraged members of his court to work on a notation system that would be easy to learn and to transcribe in. Two music systems were developed as a result and presented to Selim III, by Hampartsoum Limondjian and Abdulbaki Nasir Dede. Abdulbaki Nasir Dede's system was based on the abjad system, however differs in the ordering of the notes. Hampartsoum Limondjian's notation that he developed in two years between 1813 and 1815 was preferred over the other and became the dominant notation for Turkish and Armenian music.