Develop a musical piece using the given motif and adhere to the outlined structure.
X:1
L:1/8
M:4/4
K:Amin
['c3 B A2 e2 decd B2 AG', 'e2 dc Bcde B2 AG'  
X:1
L:1/8
M:4/4
K:Amin
 c3 B A2 e2 | decd B2 AG | c3 d e^f g2 | edcB A4 :| g2 e2 e2 dc | Bcde B2 AG | g>agf e2 g2 | 
 ageg a3 b | g3 f e2 dc | Bcde B2 AG | c3 d e^f g2 | edcB A4 :|  