Sweden was a country that managed to stay clear from the World War II. It's almost incredible to think that at the heart of Europe, there was a nation that wasn't afraid for their lives on a daily basis. During that period, Swedish film industry took a giant leap forward, producing such giants as Bergman. Sweden has also been a very advanced country of jazz since the 30s, so Swedish films of that period often feature a good deal of high class orchestras and singers.
This is not the case with Captured by a Voice. This is an old school film, at least musically speaking. The material could easily have been composed ten or even more years earlier. And that's a pity, since the action revolves around recording industry (there are good shots of early recording studios and apparatuses, if you are interested in that). The style of singing is hopelessly outdated by 40s standards. There are posh nightclubs and clothes, but everywhere tangos and waltzes are being played. Obviously the director / producer hated swing. Otherwise this is a well shot and edited comedy. The DVD released in Sweden doesn't have any subtitles, which is a pity, but trust me, nothing too important is being said anyway.