Compose a piece of music following the given alphabetical representation of the musical structure and the provided motif.
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
['Bd BG', 'fa fd']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
|: GA Bc dB AG | ag fe (e2 d2) | Bd BG ce cA | Bd BG GF ED | GA Bc dB AG | ag fe (e2 d2) | 
 Bd BG de cA | G2 F2 G4 :: de fg fa fd | gb ge fa fd | de fg ag fe | Bd BG FA FD | Bd BG ce cA | 
 fa fd gb ge | dg fe dc BA | G2 F2 G4 :|  