Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:2/2
K:G
['BA GABc dedB g2 ge dega bage', 'G2 gb add^c dega beed e2 ga']  
X:1
L:1/8
M:2/2
K:G
 BA | GABc dedB | g2 ge dega | bage dBGA | BAAG A2 BA | GABc dedB | g2 ge dega | bage dBAB | 
 G2 GF G2 :: gb | add^c dega | beed e2 ga | (3bag af gedB | BAAG A2 BA | GABc dedB | g2 ge dega | 
 bage dBAB | G2 GF G2 :|  