Keigo Oyamada (小山田 圭吾, Oyamada Keigo, born January 27, 1969 in Setagaya, Tokyo, Japan) is a Japanese recording artist and producer better known by his stage name Cornelius (CORNELIUS（コーネリアス）, Kōneriasu).
Keigo Oyamada (小山田 圭吾, Oyamada Keigo, born January 27, 1969 in Setagaya, Tokyo, Japan) is a Japanese recording artist and producer better known by his stage name Cornelius (CORNELIUS（コーネリアス）, Kōneriasu).
