[2] Chaplin saw his film as a throwback to the shipboard romances that were popular in the 1930s, and wrote "This Is My Song" with the intent of evoking that era.

After being disillusioned with regard to Jolson, Chaplin considered having "This Is My Song" recorded by Petula Clark, who had a home in Switzerland near his residence.

"This Is My Song" also earned hit status in Finland (#8), India (#5), Malaysia (#1),[5] New Zealand (#15),[6] Norway (#6), Singapore (#1),[5] Spain (#8), Thailand (#9)[7] and Venezuela (#5).

[8] The North American single release omitted the opening lyrical section, following the instrumental introduction, owing to the length of the song.

This made the strong UK showing of "This Is My Song"—Clark's first single release since "Downtown" to be neither written nor produced by Hatch—the more remarkable.

Secombe himself found the lyrics risible; several takes were necessitated due to his bursting into laughter when he tried to sing the line: "I care not what the world may say".

(Clark's previous UK #1 song, "Sailor", had also had a rival version, in that instance by Anne Shelton, which had reached the Top 10.

Besides selling over 300,000 units in the UK,[15] Secombe's version of "This Is My Song" also became a hit in Australia (#6), Ireland (#13) and South Africa (#15).

Versions of "This Is My Song" have been recorded by Ronnie Aldrich, The Ray Charles Singers, Ray Conniff and the Singers (from the This Is My Song album/ 1967), Dada, James Darren, Percy Faith, Connie Francis (live version), Bobby Hendricks, Engelbert Humperdinck (whose "Release Me" succeeded Clark's version of "This Is My Song" at #1 UK and kept Secombe's version at #2), Morgana King, James Last, the Lennon Sisters, the Lettermen, the Patrick Linder and Thilo Wolf Big Band, Mantovani, Lena Martell, Al Martino, Paul Mauriat, Jane McDonald, Jim Nabors, Frank Sinatra, Jerry Vale, Bobby Vinton, Andy Williams, Taiwanese singer Tracy Huang (1980 with EMI) and Hong Kong artists, Nancy Sit (1967 with Crane Brand Records), Judy Jim 詹小屏 (1969 with EMI Columbia Graphophone Company) & The Chopsticks (Sandra & Amina) (1970 with Crown Records).

release from 2002, "This Is My Song" follows "Ten Thousand Years Ago" - which only features the group's male members - to showcase Judith Durham as a solo vocalist.

Contemporary covers of "C'est ma chanson" include those by Lucky Blondo (fr) and Mireille Mathieu while "Cara Felicità" was recorded by 15 Italian singers in 1967.

Angelika Milster (de) remade "Love, So Heisst Mein Song" for her 1998 album ""Die größten Hits der Filmgeschichte" as did Margot Eskens for a 2006 single release.