Develop a musical piece employing the provided motif and an alphabet-based structure.
X:1
L:1/8
M:4/4
K:G
['B/c/ dGB(G c)=F [FA]2 dGB(d g)d B2', 'G B DDF(A c)F B2 GGBd gd']  
X:1
L:1/8
M:4/4
K:G
 B/c/ | dGB(G c)=F [FA]2 | dGB(d g)d B2 | dGB(B c)=FAB/c/ | dcBA G2 G :| B | DDF(A c)F B2 | 
 GGBd gd B2 | DDFA cFAc | dcBA G3 B | DAF(A c)F A2 | GdB(d g)d B2 | DFDE FGAc | dBcA G2 G ||  