Piero Umiliani composed the soundtrack for Svezia, Inferno e Paradiso/Sweden, Heaven and Hell/Schweden - Hölle oder Paradies/ Sverige - Himmel eller helvete. It is typical laid-back lounge-style jazz-pop, á la 60s and 70s, often heard in European exploitation flicks of that era.
(The soundtrack of course contains the famous song "Mah-na-Mah-na"....)
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The cover (right) was found by Johnny at a cool site called italiansoundtracks.com