Album Released Format Recorded Length Label Writers Producer Previous Next "Oh!" is a pop song recorded by Girls' Generation. It is track #1 on their second studio album Oh! and was used as the lead single. The song was released on various online music sites on January 23, 2010 and reached the #1 spot on the Monkey3 online music chart instantly after its release and on other music sites. The song reached #2 on the Gaon 2010 digital yearly charts with 3,316,889 copies sold.