Utilize the provided motif and the alphabetically represented musical sequence to craft an original musical composition.
X:1
L:1/4
Q:1/2=100
M:3/2
K:G
['g g/a/ b g a2', 'a f']  
X:1
L:1/4
Q:1/2=100
M:3/2
K:G
 g g/a/ b g a2 | g e2 a f d | g g/a/ b g a2 | d g2 d B G || B B/c/ d B c2 | c A2 a f d | 
 g f/e/ d c B G | c A a f g G |]  