Ran across an interesting site: 1950s TV Themes - Title Cross-Reference https://classicthemes.com/50sTVThemes/themeTitleCrossRef.html
 
I seem to remember a game show, probably in the ‘50s, that used the Swedish Rhapsody as the theme.  I’ve tried to find the name for years.  This site didn’t help but it was interesting.
 
At the bottom of the page, I clicked on “To the 1950s TV Series List” and it took me to this page: https://classicthemes.com/50sTVThemes/tvSeriesList.shtml  It’ll keep you busy for a while.