There are several artists under the name Troja: An Indian electronic music producer, A four men metal band from Kosovo and a jazz trio from Switzerland. 2) The jazz trio was formed in 2003 by pianist Peter Zihlmann and consists of Peter Zihlmann - piano, Patrick Sommer - bass, Tobias Friedli - drums. The traditional club jazz trio aims to create its own band sound by using their respective instruments in different, new ways. The songs, all composed by the band members