Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
Q:3/8=112
M:6/8
K:C
['e2 A fga'  
X:1
L:1/8
Q:3/8=112
M:6/8
K:C
|:"^A""Dm" afa"C" geg |"Bb" fdf"A" e2 A |"C" cde"Dm" fga |"C" gaf"Dm" g2 f ::"^B""Am" ccc c>BA | 
"Dm" agf"Am" e2 A |"C" cde"Dm" fga |"C" gaf"Dm" e2 d :|  