“Gangnam Style”is a Korean language colloquialism that refers to a luxurious lifestyle associated with the Gangnam district, an affluent and trendy area of Seoul. The music video depicts Psy dancing at various locations in Gangnam. The song is about “the perfect girlfriend who knows when to be refined and when to get wild.”
A literal translation of “오빤 강남 스타일 (Oppan Gangnam seutail)” is “(I) Oppa Is Gangnam Style”.The Korean word 오빠 (oppa) means “a female’s elder brother” but can be also used as a first-, second- or third-person masculine pronoun to designate a male who is elder or older than a female. Based on more recent cultural norms, the term has typically been used to refer to a boyfriend or male spouse. It is used as a first-person pronoun in this phrase. 오빤 (oppan) is an abbreviation of 오빠는 (oppaneun). 는 is a topic marker, which in this case means the implied subject of the sentence is the singer (오빠). The verb “to be” is omitted, as is often the case in such short Korean sentences. Thus the literal translation of “Oppan Gangnam style” is “Your big brother [is] Gangnam Style”.
The lyrics are by Psy, music by Psy and Yoo Gun-hyung, and it was arranged by Yoo Gun-hyung, who is a well-known producer in South Korea and also collaborated with Psy in the past.