An examination of Mehmet Zekâi Dede Efendi's works composed in the form of heavy semai from usul-aruz vezin

XVIII. Zekâi Dede Efendi, one of the leading composers, set the Hamma mold in Traditional Turkish Music, Mehmet Efendi's studentship began to master music, and he received the appreciation of the leading contemporary best musicians of the era. Mehmet Zekai Dede, who composed many works in varying forms throughout his art life, has 206 religious and non-religious works in the Classical Turkish Music notation archive of the Ministry of Culture. Mehmet Zekai Dede Efendi, one of the great composers of classical Turkish music, has 21 pieces composed in the 'Heavy Semai' form. Among the best ones in this 'Heavy Semai' form, it is aimed to determine whether the use of usûl-arûz meter is very comprehensive, which prosody patterns of the used lyrics are the most, and which patterns are shown and improved by which method. In the study, the features of the signs of the lyrics, the usûl-arûz meter indicators and the examples of the melodic rhythm of the work are shown in detail, with the method of the content of the se content, whose education is prepared in the best way. For this purpose, the research is aqualitative research and was designed with a systematic scanning pattern. In the research, data were collected through document review and analyzed by theme, descriptive analysis and content analysis. 10 of the 21 works in the form of heavy semai belonging to Mehmet Zekâi Dede are Mefûlü/ Mefâîlü/ Mefâîlü/ Feûlün, 5' i Fâilâtün/ Fâilâtün/ Fâilâtün/Fâilün, 2 of them Müstefilâtün/ Müstefilâtün, 1'i Mefâilün/ Mefâilün/ Mefâilün/ Fâilün It was determined that it was composed in 'i Mef'ûlü/ Fâ'ilâtü/ Mefâ'îlü/ Fâ'ilün and 2 of them were in Mefâîlün/ Mefâîlün/ Mefâîlün/ Mefâîlün meter, and the melodic distribution of open and closed syllables in the works was found to be in a balanced structure. From these works; 4 of the works in Mefûlü/ Mefâîlü/ Mefâîlü/ Feûlün meter are in the limping semai (10/8), 4 of them are in the heavy sengin semai (6/4), 2 of them are in the sengin semai (6/8), Fâilâtün/ Fâilâtün/ Fâilâtün/ Fâilün 5 works on the meter are in the Akak semai (10/8) meter, 2 pieces on the Müstefilâtün/ Müstefilâtün meter in the Akak semai (10/8) style, and 1 piece on the Mefâîlün/ Fâilâtü/ Mefâîlün/ Fâilün meter, on the Heavy Akak semai (10/4) meter, / Mefâîlün/ Mefâîlün/ 3 pieces of the works composed in Mefâîlün meter were composed in the limping semai (10/8) method and one in the heavy aksak semai (10/4) method. Keywords: Turkish Music, Turkish Classical Music, Mehmet Zekâi Dede Efendi, Usûl-Ârûz Vezin Relation, Ağır Semâi