High Quality Content by WIKIPEDIA articles! "Oh Santa!" is a pop song by American singer-songwriter Mariah Carey. It was released by Island Records on October 11, 2010 as the lead single from her second Christmas album, Merry Christmas II You (2010). The song was co-written and co-produced by Carey, Jermaine Dupri and Bryan-Michael Cox. The song received mixed to positive reviews from music critics, who praised the musicality of the song, but felt that it was substandard to Carey`s iconic Christmas song "All I Want for Christmas is You".