Acqua Fragile was an italian progressive rock band, active from 1971 to 1975. The band was established in the city of Parma. Bernardo Lanzetti, leader and vocalist of the band, is best known for his work with Premiata Forneria Marconi and has played in many other progressive rock acts, including neoprogressive band Mangala Vallis.

Source: Wikipedia (https://en.wikipedia.org/wiki/Acqua_Fragile)