"You're My World" is a ballad originally recorded in 1963 as "Il Mio Mondo" ("My World") by Umberto Bindi, who co-wrote the Italian-language version with Gino Paoli. Rendered with English lyrics by Carl Sigman as "You're My World", the song has reached No. 1 in Australia (twice), Belgium, Mexico, Netherlands, South Africa and United Kingdom via recordings by Cilla Black, Daryl Braithwaite, Guys 'n' Dolls and Helen Reddy. (Black's and Reddy's versions reached the US Top 40 in 1964 and 1977, respectively.) The song also went to No. 1 in France and Spain via the respective translations "Ce monde" and "Mi Mundo", both sung by Richard Anthony.

Although the original Italian version by composer Umberto Bindi was not a hit, even in Italy, the song came to the attention of UK record producer George Martin, who commissioned an English version to be recorded by his protégée Cilla Black. The English lyrics were written by Carl Sigman whose son Michael Sigman would recall: "Inspired by Umberto Bindi's haunting melody, Carl evoked Gino Paoli's Italian title ('Ill Mio Mondo' or 'My World.') But he created a wholly original English lyric".

Black cut the song "You're My World" — as Carl Sigman entitled his English language rendering of "Il Mio Mondo" - at Abbey Road Studios with Johnny Pearson conducting his orchestra and The Breakaways providing background vocals. Black has said that her road manager and future husband Bobby Willis also sang on the track. Judd Proctor was the lead guitarist on the session.

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