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:Ador
['eAAG A3 G EGDG EGDG EAAG A2', 'eaag a2']  
X:1
L:1/8
M:4/4
K:Ador
 eAAG A3 G | EGDG EGDG | EAAG A2 (3Bcd | egfa gedg | eAAG A3 G | EGDG EGDG | EAAG A2 (3Bcd | 
 egfa gedg || eaag a2 ba | gede gedg | eaag a2 ga | bagb a3 g | eaag a2 ba | gedB dega | 
 bgaf gefd | e3 d e2 ag ||  