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:Gmin
['dedc BcBA', 'gd d2 gaba']  
X:1
L:1/8
M:4/4
K:Gmin
 DGGF GABc | dedc BcBA | FGGF GABc | dcBc A2 BA | FGGF GABc | dedc BcBA | dedc BcBA | BAGF DG G2 :| 
 gd d2 gaba | fc c2 fgaf | gd d2 gaba | fdca g2 ba | gd d2 gaba | fc c2 fgaf | gd d2 gaba |1 
 fdcA G2 ba :|2 fdcA G2 GF ||  