are there any ethnic groups in the modern city?
Kurdish,  Bosniaks
Istanbul
 Kurdish community, originating from eastern and southeastern Turkey. Although the Kurdish presence in the city dates back to the early Ottoman period, the influx of Kurds into the city has accelerated since the beginning of the Kurdish–Turkish conflict in the late 1970s. Between two and four million residents of Istanbul are Kurdish, meaning there are more Kurds in Istanbul than in any other city in the world. There are other significant ethnic minorities as well, the Bosniaks are the main people of an entire district – Bayrampaşa. 
who was olivier messiaen? He was a French composer, organist, and ornithologist what instrument does the second type of person play? Organ what type of instrument is that? It is a keyboard instrument of one or more pipe divisions which are the modern versions of this type? Hammond organ a type of electronic organ. what are the features of the first one? The sound is generated by creating an electric current from rotating a metal tonewheel near an electromagnetic pickup, and then strengthening the signal with an amplifier to drive a speaker cabinet. what were the early uses of the tonewheel? It is used as a beat frequency oscillator in early radio receivers to make continuous wave radiotelegraphy (Morse code) signals audible. what are the uses of this code in aviation? The pilots use this code to ensure that the stations the pilots are using are serviceable whom is the code named after? Samuel Morse what were some of his inventions? Single-wire telegraph system did he create any paintings? Yes, the "Dying Hercules" is his master piece. did he receive any foreign recognition? He was awarded the sum of 400,000 French francs by the governments of France, Austria, Belgium, the Netherlands, Piedmont, Russia, Sweden, Tuscany, and Turkey which are the major visual arts in the last country? Turkish painting, Carpet weaving, Ottoman miniature where did the last one originate? Istanbul was the city known by any other name? Byzantium where did this name of the city originate from? The Anglicization of Latin "Byzantinus" yielded "Byzantine"
wiki:16465268
Istanbul [SEP] Religious and ethnic groups
The largest ethnic minority in Istanbul is the Kurdish community, originating from eastern and southeastern Turkey. Although the Kurdish presence in the city dates back to the early Ottoman period, the influx of Kurds into the city has accelerated since the beginning of the Kurdish–Turkish conflict in the late 1970s. Between two and four million residents of Istanbul are Kurdish, meaning there are more Kurds in Istanbul than in any other city in the world. There are other significant ethnic minorities as well, the Bosniaks are the main people of an entire district – Bayrampaşa. The neighborhood of Balat used to be home to a sizable Sephardi Jewish community, first formed after their expulsion from Spain in 1492.