Unique in the history of Italian progressive music, New Trolls were leaders and were for a time the top band in Italy. In 1973, New Trolls split into two camps, the hard-rocking IBIS and the symphonic-oriented New Trolls Atomic System. They crossed many different permutations of line-up changes, many musical stylings... and great hits, passing through beat, pop ballads, progressive rock works, hard rock, and melodic pop followed groups like Genisis and PFM.