 Bass guitarist Mike Rutherford of Genesis was originally a cellist and included some cello parts in their "Foxtrot" album.Established non-traditional cello groups include Apocalyptica, a group of Finnish cellists best known for their versions of Metallica songs, Rasputina, a group of cellists committed to an intricate cello style intermingled with Gothic music, the Massive Violins, an ensemble of seven singing cellists known for their arrangements of rock, pop and classical hits, Von Cello, a cello fronted rock power trio, Break of Reality who mix elements of classical music with the more modern rock and metal genre, Cello Fury, a cello rock band that performs original rock/classical crossover music, and Jelloslave, a Minneapolis-based Cello duo with two percussionists.These groups are examples of a style that has become known as cello rock.