Craft a musical composition that incorporates the supplied alphabet sequence and motif.
X:1
L:1/4
M:4/4
K:G
['G G']  
X:1
L:1/4
M:4/4
K:G
 D | G G G G | A A A G | F E F D | G2 G D | G G G G | A A A G | F E F D | G2 G G | B B B B | 
 c2 c B | A A A A | d3 G | d d d d | e2 e d | c B c d | B3 |]  