ByㅡJEONG YEONOK 

월드위대한공헌분월드베스트+고문초청인사분대정연옥그세계별

연구원-인터네셔날레 MURC

WE WARMLY♥WELCOME YOU■Asia,Europe,America,Africa,Oceania■Jeong Yeon-ok(World-Best+(Person)&World-Best+(Scholar)■Sight Singing&Ear Training Books■If you click below, you will be directed to the place where Jeong Yeon-ok's books are sold■1-TODAY’S GUIDANCE, - SIGHT SINGING, & EAR TRAINING■2-OVERCOMING/THE DIFFICULTIES■3-International today guide..SIGHT SINGING & EAR→TRAINING TO OPEN(ISSN2713-5527(Online))■오늘을여는시창청음교육인도(ISSN2713-5527(ONLINE)■세계최고인물+세계최고학자+汎소중한별정연옥의시창과청음웹+입니다■정연옥의시창과청음도서판매곳으로연결됩니다+★