Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/4
M:3/4
K:G
['B A G', 'B/ d3/2 c']  
X:1
L:1/4
M:3/4
K:G
 D | G G G | G/ B3/2 G | A A A | A/ c3/2 A | B A G | d c B | B A G | A2 D |: G G G | G/ B3/2 G | 
 A A A | A/ c3/2 A | B/ d3/2 c | B/ d3/2 c |1 B3/2 G/ A | G2 D :|2 B3/2 G/ A | G2 ||  