Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:4/4
K:Amin
['g>f e2 dB AGED G3 A B2', 'b3 a gede']  
X:1
L:1/8
M:4/4
K:Amin
 g>f | e2 dB AGED | G3 A B2 (3def | gede B2 A2 | A4 :| g>a | b3 a gede | g2 a2 a2 ga | b3 a gede | 
 g6 ag | e2 dB AGED | G3 A B2 (3def | gede B2 A2 | A6 ||  