Sedaka got his breakthrough as a performer with 1958's The Diary—inspired when Connie Francis refused to let him and songwriting partner Howard Greenfield scour her diary for inspiration. Oh! Carol, meanwhile, was a paean to Sedaka's ex-girlfriend Carol Klein—the irrepressibility of the melody at odds with the misery in the lyrics (I am but a fool!). Klein was impressed enough to write an answer song, Oh! Neil, which she recorded under her new pen name: Carole King.