Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:6/8
K:G
['', 'GBd cAF Gge dBG cec', 'gdB gfg eag fef def gag fgf']  
X:1
L:1/8
M:6/8
K:G
 D |: GBd cAF | Gge dBG | cec BdB | ABG FED | GBd cAF | Gge dBG | cec Bag |1 fef g2 D :|2 
 fef g2 f |: gdB gdB | gfa gdB | gfg eag | fef def | gag fgf | efe def | gdB AGA |1 BGF G2 f :|2 
 BGF G3 ||  