In London, Ray and Ken are two struggling composers of popular songs, and they make friends with a young French singer, Georgie, newly arrived from Paris.

She likes one of the songs Ray and Ken have written, and chooses to sing it when she gets an audition with bandleader Ted Heath, and she is hired as their singer.

The script relentlessly tracks down every particle of humour to be wrung from comic landladies, teenage crooner fans, arty music critics and the general inanities of Tin Pan Alley.

"[5] Allmovie wrote: "director Val Guest manages to extract new laughs out of such old setpieces as showing a snobbish audience being gradually won over by pop music.

The principal attraction of It's a Wonderful World – to modern viewers, at least – is the presence of Ted Heath, whose screen appearances were rare.