Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/8
M:2/4
K:G
['D>D DB, DE GA Bd AB/A/', 'Bd dB ce']  
X:1
L:1/8
M:2/4
K:G
 D>D DB, | DE GA | Bd AB/A/ | GE EG/E/ | D>D DB, | DE GA | Bd AB/A/ | G2 G2 :: Bd dB | ce ed/c/ | 
 Bd AB/A/ | GE EG/A/ | Bd dB | ce e>f | ge (3fed | e2 e>f | ge (3fed | ed B>A | Bd/B/ AB/A/ | 
 GE E2 | D>D DB, | DE GA | Bd/B/ AB/A/ | G2 G2 :|  