Arvo Pärt – Sanctus  on Vimeo

Arvo Pärt is an Estonian classical composer and one of the most prominent living composers of sacred music. Arvo Pärt, born 11 September 19350,  is an Estonian classical composer and composer of sacred music. Since the late 1970s, Pärt has worked in a minimalist style that employs his self-invented compositional technique, tintinnabuli. His music also takes inspiration from Gregorian chant. He is often associated with the New Simplicity movement.  Here is a list of works. -From Wikipedia