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:9/4
K:C
['G (E']  
X:1
L:1/4
Q:3/4=100
M:9/4
K:C
 c2 G (E F) E (D F) D | c2 G (E G) E D2 _B | A2 G (E G) E (G E) G | 
 c3/2 B/ A G"^NB""_poss D in MS" E G C3 |:  