Develop a musical composition in line with the given structure and theme.
X:1
L:1/8
M:2/4
K:D
['f/d/ .A.B.A', 'gg/f/ eA ff/e/ dd'  
X:1
L:1/8
M:2/4
K:D
 f/d/ | .A.B.A f/d/ | .A.B.A d/f/ | aa/a/ aa | f2 df/d/ | .A.B.A f/d/ | .A.B.A d/f/ | gg/g/ aa | 
 f2 d || gg/f/ eA | ff/e/ dd | cegb | a/b/a/g/ fd | gg/f/ eA | ff/e/ dd | ca/g/ g/a/b/a/ | 
 fdd!D.C.! ||  