Develop a musical composition by incorporating the given alphabetic framework and motif.
X:1
L:1/8
Q:1/2=75
M:4/4
K:Bb
['Bdfd efce dfdB cAGF GB =eg fedc', 'F2 Acec Bdfd efge dcBA Bbag gfed']  
X:1
L:1/8
Q:1/2=75
M:4/4
K:Bb
 Bdfd efce | dfdB cAGF | GB =eg fedc | bgf=e f2 F2 :: Acec Bdfd | efge dcBA | Bbag gfed | 
 dcBA B2 B,2 :|  