Utilize the provided motif and the alphabetically represented musical sequence to craft an original musical composition.
X:1
L:1/8
M:2/4
K:G
['D GGGD G2 GD G2 z d']  
X:1
L:1/8
M:2/4
K:G
 D | GGGD | G2 GD | G2 z d | dddd | e2 ed | ccce | d2 z B | BBBB | c2 cd | B2 z |]  