Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
M:9/8
K:G
['B2 d', 'g2 e']  
X:1
L:1/8
M:9/8
K:G
|: B2 d dBd dBG | c2 e efg f2 d | B2 d dB/c/d def | g2 G G>AB A2 G :: g2 e dBG dBG | 
 g2 e efg f2 d | gfe dBd d>ef | g2 G GG/A/B A2 G :|  