There are a lot of exelent suggestions already but I would like to add Alfred Schnittke. He is different from Part, I would say more "experimental" for the lack of better word. His Concerto's and violin concerto's are among my absolut favorits in contemporary classic pieces.
Part's Miserere and Lamentante as well.
Sergey.
Part's Miserere and Lamentante as well.
Sergey.