The composer machaut establish the form in medieval music.

Machaut helped develop the motet and secular song forms.

Iwould say d) signed unknown street singers who brought original songs to record.

B.) what tasks you need to complete. this is because if there is even a little focus of what the world is doing, you are missing something that you need to be doing. its self discipline. by goggles you see, and be you goggles you are seeing you. no one else.