Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
M:12/8
K:Amin
['Acd e3 egd efg f3 efc dGc']  
X:1
L:1/8
M:12/8
K:Amin
|: Acd e3 egd efg | f3 efc dGc dGB | ABc aAg AeA gAe | g a2- age g3 dcB :|  