Create a musical composition using the given alphabetical pattern and melodic theme.
X:1
L:1/8
M:4/4
K:G
['G A']  
X:1
L:1/8
M:4/4
K:G
 D | G G A G F E D D | G G A B c3 B | d d G A F E D D | A d c A G3 d | d d e d BA G D | 
 G e e B A2 Bc | d G A G F E G | A d c A G3 x |]  