Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/4
Q:1/4=120
M:2/2
K:F
['G A', 'C D']  
X:1
L:1/4
Q:1/4=120
M:2/2
K:F
 G A B G | A F F A | G E C D | E2 F2 :: E D E C | D =B, G,2 | C C C D | E2 .F2 :|  