Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:2/4
K:G
['c/B/A/G/ F>E ED D>D GF']  
X:1
L:1/8
M:2/4
K:G
|: A/B/ |"D7" c/B/A/G/ F>E |"G" ED D>D |"D7" GF A>B |"G" AG GA/B/ |"D7" c/B/A/G/ F>E |"G" ED D>D | 
"D7" GF B>A |1"G" G3 :|2"G" G3 |: B/B/ |"G" Bc"D7" dg |"G" B2- BB/B/ |"C" cc"D7" dd | 
"G" G2- GB/A/ | GB dg | b2- ba/g/ |"D7" fa a/g/f/e/ |"G" d2- dB/B/ |"G" Bc"D7" dg |"G" B2- Bc/B/ | 
"Am" AB cd |"C" e2- e2 | e2 f>e |"G" ed Bc |"D7" dd/d/ ba |"G" g3 ||  