Singers of art songs must be able to alter his or her voice, facial expression, and total demeanor to effectively portray the various characters.

Whose investigations examine the concept of the "paradigm shift"?

A. Thomas Kuhn B. Roland Barthes C. Jacques Derrida D. Milan Kundera

The sagging, wrinkled skin, deeply furrowed brow and hollowed cheeks of this distinctive portrait are intended to convey

a) a respectful dignity of character in line with Cicero’s dutiful citizen. b) an attitude of ominous disapproval toward dictatorship as expressed by Cicero toward Caesar. c) a representation of Caesar’s ill health as documented by Cicero. d) a psychological state of mental confusion typical of old age.