The idea for GREGORIAN was born when Frank Peterson visited the royal monastery of San Lorenzo de El Escorial in Spain in 1989. Wandering through the medieval monastery and castle complex and listening to contemporary music on his Walkman, he found the inspiration for the sound experiment of mixing ancient Gregorian music with modern music.                    

Peterson first realized his idea with Michael Cretu and the worldwide sound phenomenon "Enigma". Their first album "MCMXC a.D." was released in 1990 and quickly became a worldwide success. 

"MCMXC a.D." was number 1 in 41 different countries and went 57 times platinum and 45 times gold. It is considered as the most successful German album of all time worldwide.  

This gigantic success paved the way for GREGORIAN to take the musical idea one step further and to establish it as an independent music act. In 1999, with the start of production on the first album "Masters Of Chant", Frank Peterson seamlessly built on the success of "Enigma".                   

In the following years, GREGORIAN has sold over 10 million CDs and 7 DVDs worldwide and achieved gold and platinum status in 24 different countries.              

At the end of 2024 and thus in time for their Anniversary World Tourin 2025, Frank Peterson will release a new GREGORIAN album. The album will include new songs as well as re-recordings of some well- known GREGORIAN classics.