Compose a music piece that includes the specified motif while adhering to the outlined alphabetical sequence.
X:1
L:1/8
M:4/4
K:G
['dBcA G3 B dBcA', 'dg g2']  
X:1
L:1/8
M:4/4
K:G
|: dBcA G3 B | dBcA FGAB | dBcA GBdg | fd d2 fdcA | dBcA G3 B | dBcA G2 AB | dBcA GBdg | 
 fdde fdcA |: dg g2 dgbg | g2 bg fdcA | dg g2 dgag | fdcA FGAB | dg g2 dg g2 | dgag fdga | 
 bg g2 gbag | fdcA FGAB ||  