Compose a piece of music utilizing the given alphabet sequence and motif.
X:1
L:1/8
M:4/4
K:Bb
['defd dcBA BcdB BAGF GBAc', 'B2 B2 Aceg fdB_A Gcec BAGF GEDC']  
X:1
L:1/8
M:4/4
K:Bb
 defd dcBA | BcdB BAGF | GBAc Bdce | dfed d2 c2 | defd dcBA | BcdB BAGF | GBAc Bdfe | dcBA B2 B2 :: 
 B2 | Aceg fdB_A | Gcec BAGF | GEDC B,A,B,C | DFED D2 C2 | EGFE | DFBd | ecdB cA F2 | GABD EGce | 
 dBFA B2 :|  