Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
M:2/2
K:D
['a2 a2', 'e6 fg a2 d2 agfe d6 cd']  
X:1
L:1/8
M:2/2
K:D
 fg | a2 a2 a2 b2 | a3 g f2 e2 | d2 A2 defg | e6 :| fg | a2 d2 agfe | d6 cd | e2 A2 edcB | A6 Bc | 
 d3 e f3 g | a6 ag | fe f2 e3 d | d6 :|  