Develop a musical composition that includes the supplied motif while following the designated alphabetical pattern.
X:1
L:1/4
M:3/4
K:G
['G A']  
X:1
L:1/4
M:3/4
K:G
 G A c | B/d/ e c/e/ | d A c | B/G/ F D | G A B | B/G/ F A/F/ | G A c | B/G/ F D |]  