Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/16
Q:1/8=80
M:4/4
K:G
['B4 G4', 'd4 B4']  
X:1
L:1/16
Q:1/8=80
M:4/4
K:G
 BA | G6 B2 d4 B4 | g6 dc B4 G4 | C6 e2 e4 C4 | f6 d ^c/d/ e4 f4 | g6 d2 B4 G4 | e6 c2 A4 F4 | 
 D6 c2 B4 A4 | B6 GF G6 :| ga | b6 g2 d'6 c'b | a4 f4 d6 ^d2 | e4 c4 g6 fe | d4 B4 G6 AB | 
 c6 d2 e4 c4 | B6 c2 d4 B4 | A6 B A/G/ A4 G4 | F4 D4 E4 F4 | G6 b2 b6 c'd' | a4 f4 d6 ^d2 | 
 e4 c4 g6 fe | d4 B4 G6 d2 | e6 f e/f/ g4 e4 | d4 B4 G6 AB | A4 F4 D6 c2 ||  