Who composed the song “Manyageh (If)” by Girls' Generation?

The song “Manyageh (If)” by Girls' Generation was composed by So Nyuh Shi Dae.

Manyageh (If)

So Nyuh Shi Dae

manyageh naega gandamyeon
naega dagagandamyeon
neon eoddeogeh saenggakhalgga
yonginaelsu eobtgo

manyageh niga gandamyeon
niga ddeonagandamyeon
neol eoddeogeh bonaeyahalji
jaggoo geobi naneun geol

naega babo gataseo
barabolsu bakkeman eobtneungeon amado
wemyeon haljidomoreul ni maeumgwa
ddo keuraeseo deo mareojil saiga dwelggabwa

jeongmal babo gataseo
saranghanda haji mothaneungeon amado
mannam dwiyeh gidarineun apeumeh
seulpeun nanaldeuri dooryeowoseo ingabwa

manyageh niga ondamyeon
niga dagaondamyeon
nan eoddeogeh haeyamanhalji
jeongmal alsu eobtneungeol

naega babo gataseo
barabolsu bakkeman eobtneungeon amado
wemyeon haljidomoreul ni maeumgwa
ddo keuraeseo deo mareojil saiga dwelggabwa

jeongmal babo gataseo
saranghanda haji mothaneungeon amado
mannam dwiyeh gidarineun apeumeh
seulpeun nanaldeuri dooryeowoseo ingabwa

naega babo gataseo
saranghanda haji mothaneungeon amado
mannam dwiyeh gidarineun apeumeh
seulpeun nanaldeuri dooryeowoseo ingabwa