My art teacher found this and asked what type of green is this and I don’t know

Organum was first developed by religious singers adding another melody directly above the chant and mirroring the chant line. true false

What does it mean to have a bias (for example your bias of bts)?

Nstrumental music that supports the main part(s) chamber music 2. a large group of instruments usually including woodwinds, brass, and percussion band 3. music written for small ensembles for an intimate setting accompaniment 4. a person who leads an ensemble conductor 5. an electronic keyboard capable of multiple instrument sounds