Compose a piece of music using the provided motif and follow the designated alphabet character structure.
X:1
L:1/8
Q:3/8=100
M:6/8
K:Bb
['Bdf{e} d2 c', 'A2 G']  
X:1
L:1/8
Q:3/8=100
M:6/8
K:Bb
 Bdf{e} d2 c | Bdf{e} d2 c | Bbg fdB | Ace dcB | Bdf{e} d2 c | Bdg =e2 d | cbg =ece | f3 F3 || 
 FAc{B} A2 G | FGE DCB, | def gab | fed c2 c | BF_A{A} G2 F | EGc A2 G | Fec AFA | B3 B,3 |]  