Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/8
M:2/4
K:G
['BB/A/GB/c/ dd/c/Bd eeAd c2 BG']  
X:1
L:1/8
M:2/4
K:G
 G | BB/A/GB/c/ | dd/c/Bd | eeAd | c2 BG | BB/A/GB/c/ | dd/c/Bd | eeAd | c2 BG | e>ceg/e/ | 
 d>Bde/d/ | cc/B/cd | c2 B |]  