Original sentence: John Koukouzelis  or Jan Kukuzeli (; , Yoan Kukuzel; , Ioannis Koukouzelis;  1280 –  1360) was an Albanian-Bulgarian medieval Orthodox Christian composer, singer and reformer of Orthodox Church music
Edited sentence: John Koukouzelis  or Jan Kukuzeli (; , Yoan Kukuzel; , Ioannis Koukouzelis;  1280 –  1360) was an Serbian-Bulgarian medieval Orthodox Christian composer, singer and reformer of Orthodox Church music