Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
M:2/4
K:D
['A/B/A/G/ FA de f2 ga/g/', 'e>f ed'  
X:1
L:1/8
M:2/4
K:D
|: F>G | A/B/A/G/ FA | de f2 | ga/g/ fe | df A2 | A/B/A/G/ FA | de f2 | ga/g/ fe | d2 :: cd | 
 e>f ed | ce a2 | e>^d ef | ge cA | e>f ed | c/d/e ab/a/ | ga/g/ fe | d2 :|  