Printed in Germany by Johannes Alt, Frankfurt.
Liner notes are in German. It contains just a general description of the tunes performed but no additional info about the identity of the singers or other personnel involved in the recording. They are a romantic/classical vocal bel canto quintet - accompanied by bass & acoustic guitar - from Italy singing multilingual pop & folk tunes from around the world.
Track B6 is misspelled on the issue. It's actually an old Danish song called "Den lille Ole med paraplyen" (=Little Ole with an umbrella)