Develop a musical composition using the alphabetic representation of the specified sequence and incorporating the given motif.
X:1
L:1/8
M:6/8
K:Bb
['fdB GAB F2', 'F/E/ DFB EGB DFB dcB fdb', 'b2 a gdB', 'fdB G2']  
X:1
L:1/8
M:6/8
K:Bb
 B/c/ | ded fdB | GAB F2 F | Bcd cAF | Bcd c2 c | dcd fdB | GAB F2 f | fdB gec | BcA B2 :: F/E/ | 
 DFB EGB | DFB dcB | fdb geb | fdB c2 F/E/ | DFB EGB | DFB dcB | fdb gec | BcA B2 :: b2 a gdB | 
 b2 a gdB | G2 A B2 c | d2 e dBG | b2 a gdB | b2 a gdB | G2 A B2 c | D=E^F G3 :: =e2 e ede | 
 f2 g a2 z | ^f2 f f=ef | g2 a b2 z | g2 b f2 b | _e2 b fdB | G2 g fdB | G2 A B3 :|  