Compose melodies keeping in mind the specified musical arrangement.
'Sectional: Through Composed'  
X:1
L:1/8
M:3/4
K:D
 d3 e (3fed | e2 f2 g2 | f3 g (3agf | g2 a2 b2 | bgge e2 | affd d2 | (3Ace g2 f2 | e6 :: 
 e2 e2 (3cBA | (3Bde c2 (3dcB | (3Ace g2 f2 | e6 | agbe c2 | df a4 | d'c'c'ggf | d6 :: 
"^Trio" [gBD]4 (3bge | d2 c2 B2 | [gBD]4 (3bge | d2 c2 B2 | ABcdeF | G2 F2 G2 | (3DFA c2 B2 | A6 :: 
 d4 d'2 | d'c'c'b c'2 | d4 c'2 | c'bba b2 | d4 e'2 | d'c'c'b c'2 | d4 c'2 | c'bba b2 | 
 [gBD]4 (3bge | d2 c2 B2 | [gBD]4 (3bge | d2 c2 B2 | AcBAGF | G6 :|  