Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
Q:1/8=150
M:4/4
K:G
['GABd dBde gage dega bage', 'G2 (3efg afd^c dega beed efga (3bag']  
X:1
L:1/8
Q:1/8=150
M:4/4
K:G
 BA | GABd dBde | gage dega | bage dBGA | BAAG AcBA | GABd dBde | gage dega | bage dBAB | 
 G2 GF G2 :| (3efg | afd^c dega | beed efga | (3bag (3agf gedB | BAAG AcBA | GABd dBde | 
 gage dega | bage dBAB | G2 GF G2 :|  