Nwhich period(s) did poetic expression in music become more prevalent than formerly?

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

In areas where even the experts disagree; everyone has a right to his own opinion. i mean if answers aren’t given just like in lots of things; then it has to be just anyone’s opinion. is this dualism multiplicity relativism or commitment

How can you open a chest that is beyond, but adjacent to the world border?