Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
M:9/8
K:G
['B3 B2 A G2', 'd2 f']  
X:1
L:1/8
M:9/8
K:G
 B3 B2 A G2 A | B2 E E2 F G2 A | B3 B2 A G2 B | A2 D DEF E2 D :| d2 f fef g2 e | f3{a} fef e2 d | 
 d2 f fef g2 b | a2 f d2 f e2 d ||  