Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
Q:1/8=180
M:12/8
K:D
['A2 D FED F2 A A2 f', 'f3 gfe']  
X:1
L:1/8
Q:1/8=180
M:12/8
K:D
 B | A2 D FED F2 A A2 f | g2 e f2 d e2 d Bcd | A2 D FED F2 A A2 f | a2 f efe d3 d2 :| A | 
 d2 e f3 gfe f3 | gfe f2 d e2 d B2 c | d2 e f3 gfe f2 g | a2 f efe d3 d2 :|  