Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
M:4/4
K:A
['A/B/A GB', 'A/B/A GB']  
X:1
L:1/8
M:4/4
K:A
 A2 AG Acec | B3 c B2 dc | Bcde fgaf | eagf e/f/e d/c/B | A/B/A GB Acec | B3 c defg | agae fdBG |1 
 A/B/A GB A2 E2 :|2 A/B/A GB A2 cd || efed ceag | fedc defg | agfe dcBA | GEBG Ecd^d | efed ceag | 
 fedc defg | agae fdBG |1 A/B/A GB A2 cd :|2 A/B/A GB AdcB ||  