Which composer was Igor Stravinsky's teacher?

Write a brief essay defining "concept music" and provide an example

What will be an ideal response?

The hominid species Homo sapiens evolved approximately

a) 200,000 to 250,000 years ago. b) 100,000 to 120,000 years ago. c) 50,000 to 70,000 years ago. d) 25,000 to 30,000 years ago.