Craft a musical composition by incorporating the provided motif and the alphabetical representation of the given sequence.
X:1
L:1/8
M:6/8
K:Bb
['B, F3 BAG FED CDB, EFG FED', 'g fdB fdB cAF cAF']  
X:1
L:1/8
M:6/8
K:Bb
 B, | F3 BAG | FED CDB, | EFG FED | GEC C2 D/E/ | FDF BAG | FBF DEF | GAB ABc | dBB B2 :| g | 
 fdB fdB | cAF cAF | EFG FED | GEC C2 g | fdB fdB | cAF cAF | GAB cde | dBB B2 g | fdB fdB | 
 cAF cAF | EFG FED | GEC CDE | FED GFE | AGF BAG | ABc Fec | dBB B2 |]  