What two major contemporary composers have continued to work with traditional elements of melody, harmony, and rhythm?

The ritornello principle is based upon __________

a) alternating sections for soloists with sections for the full orchestra b) alternating the organ with the full orchestra c) using puppets (such as Punchinello) to act out the program during the music d) improvisation

The main panel of the closed view of Matthias Grünewald's Isenheim Altarpiece portrays