Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/4
Q:3/4=100
M:6/4
K:G
['g a', 'd B']  
X:1
L:1/4
Q:3/4=100
M:6/4
K:G
 B | g a b e f g | f g a f e d | c d e A B c | E A G F E D | g a b e f g | f g a f e d | 
 ^c d e A d c | d3- d2 :: e/f/ | g d B g d B | e c A e c A | d B G d B G | E A G F E D | 
 g d B g d B | e c A e c A | B c d E A F | G3- G2 :|  