Develop a piece of music by incorporating the provided motif and following the outlined musical structure represented by alphabet characters.
X:1
L:1/8
M:6/4
K:Gmin
['ef g6 f3 e d2 e2 g2', 'e2 d2']  
X:1
L:1/8
M:6/4
K:Gmin
 ef | g6 f3 e d2 | e2 g2 c2 =B3 c d2 | e3 d c2 B3 _A G2 | _A2 F3 E/F/ G4 :: G_A | 
 B3 c B2 e4 e/f/g | f2 edcB B4 b2 | g3 f e2 d2 e2 dc | g6 g4 f2 | e2 d2 c2 =B2 c2 d2 | 
 e2 f2 g2 _a4 g2 | f2 ed e2 G2 c2 =B2 | c6 c4 :|  