The Estonian Philharmonic Chamber Choir performs works by which Estonian classical and religious composer?
Estonian Philharmonic Chamber Choir:  The repertoire of the EPCC ranges from Gregorian Chant to modern works, particularly those of the Estonian composers Arvo Pärt and Veljo Tormis. Arvo Pärt: Arvo Pärt (] ; born 11 September 1935) is an Estonian composer of classical and religious music.
Arvo Pärt