Gregorian is a German band, headed by Frank Peterson, performing Gregorian chant-inspired versions of modern pop and rock songs. Because it features both vocal harmony and instrumental accompaniment, the music cannot be considered true Gregorian chant.

Originally, Gregorian was conceived as a more pop-oriented group in the vein of Enigma. Under this concept, they recorded the 1991 album Sadisfaction, with lead vocals provided by The Sisters of Oz: Susana Espelleta (Peterson's wife at the time) and Birgit Freud. However, this was the only album in that style.

In 1998, Peterson and his team re-invented the project to perform popular songs in the Gregorian style. The criteria for song selection were strict; in order to be considered, a song needed to be translatable into the 7-tone scale. After the songs were chosen, twelve vocalists - previously acclaimed session

The concept proved to be successful, and the group proceeded to record several more Masters of Chant albums in the same style. Their 2004 album, The Dark Side, was a slight departure from the others, featuring a darker repertoire consistent with the title.

In 2005, The Masterpieces, a compilation album with a live DVD, was released.

A fifth Masters of Chant album is scheduled for release on March 31, 2006.

Discography

• Sadisfaction (1991)
• Masters of Chant (2000)
• Masters of Chant Chapter II (2001)
• Masters of Chant Chapter III (2002)
• Masters of Chant Chapter IV (2003)
• The Dark Side (2004)
• The Masterpieces: Best Of + Live DVD (2005)

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