That is, I think, the one, recorded in the 50's, but I remember being told that the source was a Polish song, brought to Britain by the airmen, and becoming popular in a similar way to Lilli Marlene (apart from being sung by the same side) and Aupres de ma blonde from the Canadians. I can't remember knowing the song and not "knowing" that. Could it be wrong?I found the bathing song in the DT, and thought it to be a parody.
Penny