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:G
['g f', 'G B']  
X:1
L:1/4
Q:1/4=120
M:2/2
K:G
"^Moderate" g f | e2 c3/2 B/ | c g f e | d2 B3/2 d/ | B d e d | d2 A3/2 B/ | A d e d | d2 B3/2 d/ | 
 B B g f | e2 c3/2 B/ | c g f e | d2 B3/2 d/ | B d e d | d2 A3/2 B/ | A3/2 c/ B A | G3 || D | 
 G3/2 A/ G B | d3 B | c e g/a/ e | d d/d/ d B | c/d/c/B/ A c | B/c/B/A/ G B | A [EA] [FA] [GA] | 
 A/G/F/E/ D D | G3/2 A/ G B | d3 B | c e g e | d/d/d/d/ d B | c/d/c/B/ A c | B/c/B/A/ G B | 
 A [EA] [FA] D | G2 ||  