Citing Gnosis 2000: "From 1975, Etna's sole album is a gem for European jazz rock/fusion fans. What's really surprising about this, is the fact that this line-up is exactly the same as the band Flea that recorded the classic hard rock album Topi O Uomini in 1972. There are no other musical similarities. I used to have a couple of the tracks from this album tagged at the end of a tape of the Transit Express album Couleur Naturelles and couldn't really tell the difference, so that should give some idea of the quartet's sound. If you like Mahavishnu Orchestra, Iceberg, Return To Forever, Didier Lockwood's Surya, Zao and other mid-70's fusion outfits or are a Goblin completist (!) then this one is for you as it's a definitive example of the style."
The link is to be found in the comments.