Onye abụ Jeong-in mere mkpochapu nke ya naanị ọzọ n'ime afọ 15 ma bulie oche niile, na-enwe oge dị mma ọnọ na ndị na-ama ya.
Jeong-in mere mkpochapu naanị nke ya 'Oge Olu' (ntọhapụ ụlọ Nine Company, njikwa Another Level·Coco Entertainment) n'Elu Sky Art Hall Seoul ka m ju. Ebe ọ bụ ihe mbụ a họpụtara n'ọtu onye na-abụ ihe mgbe 2011 gachaa, nnukwu mmasị site n'ndị na-ama ya ochie malitere, ma Jeong-in mere 'Rush', 'Salda Ga Bomyeon', 'Jangma', 'Geureon Ileun' na ihe ndị ọzọ otu-otu, ma mepee ọnụ nke mma n'olu ike.
Ihe kachasị na-akparị n'okwu maka mkpochapu a bụ ihe mkpali nke ụlọ na-agba ihe ọgụgụ n'JTBC 'Hidden Singer 8' Jeong-in ụdị. Kang Hee-su, Kim Bo-ra, Min Seo-yoon, Go Ye-rin, na Lim J-ay rigoro n'elu ụlọ ihe nkiri ma tikọ egwu n'obi zuru ezu, at ihe nkpacha bụ na olu Jeong-in n'ezie agaghị agakọ otu oge, na-akpa obi ụlọ ahụ nke ọchị na akpalị.
Mgbe ahụ, di ya na ọkwa nke olu bụ cantere nwere ike-ike-nwe Cho Jung-chi liri ala n'akpakalị ma mee ihe nkiri 'UUU', 'Rissang Blues', 'Saramnemsae' na ihe ndị ọzọ, na-igosiputa nke mma ọnụ nke ezigbo di na nwunye. Na mgbe ahụ, onye abụ Jon Park nke nwere ndụ ogologo inyeluike n'akpakalị sonyere ma tikọ 'BLUFF' na 'Ne Saenggak' nke ukwu, na-enye mkpali n'ihe nkiri.
N'ọbọpụ mma n'mkpochapu a, 'Jjaksarang', 'Saebyeok Gil', 'Miweyo', 'Oreumakkil' na ihe ndị ọzọ elu akụkọ Jeong-in sochichiri. Karịsịa n'ihe nkiri 'Oreumakkil', ndị na-anọ n'ụlọ ihe nkiri hipụtara ọkụ phone ha ọzọ ma tikọ egwu ọnụ, na-emekọ ebe ọkụ mma. Ụlọ ihe nkiri mbughari nke 'Oru Nke Abia Nke Gị Adị Mma Karị Ya Nke Anyanwụ' na 'Gomawo,' Jeong-in ekwuola ekele ndị na-amajiri ya ebe afọ 15 gachaa, na-eme mkpochapu n'obi zuru ezu nke amamihe ma ihu.
