Western art music is the music of european and euro-american society.

The answer is music found or relocated in the western hemisphere; specifically, music’s of euro-American origins, especially western classical music. Created in the tradition of European "high are" music’s. Typically composed and notated. Western art in expressions of consecutive periods and or actions, counting classical, medieval.

western hemisphere

Explanation:

Western art music is the hemisphere music of european and euro-american society.

any school based questions?

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.