Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:4/4
K:D
['ge dc', 'Ac e2', 'b2 a3 b af ge d6']  
X:1
L:1/8
M:4/4
K:D
 fg |:"D" a2 a2 fa"A7" ge |"D" dc df A3 d |1,3"A7" cd ef gf ge |"D" dc de f2"A7" g2 :|2,4 
"^At" cd ef gf ed | e4"D" d2 z2 :| f2 |:"D" fe d2 fe d2 | f2 f2 fe fa |"A7" a2 g2 ga gf | e6 Ac | 
"A7" e2 Ac e2 Ac | e2 ed c2 b2 | a3 b af ge |"D" d6 z2 :|  