The second diagram is talk about the function and how the function affect the design as the foundation idea. literally, there are only two function that i discovered at the first -- Library (red square) and conservatory music (green block). to consider about the bataton composition, the function has a role to fullfil it. the green block as the conservatory music is expected to accomodate at least 20 members audiences that needed a merit concert hall. to respect the auditorium requisite, the green block is tilted to adjust according to audience vision. afterwards, the composition has decided by two simple pieces of batatons.