Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:2/4
K:G
['G2 G>A', 'ed B2 B/c/B/A/ GE ED G2 G>A']  
X:1
L:1/8
M:2/4
K:G
|: G2 G>A | BA Bd | B2 B/c/B/A/ | GE ED | G2 G>A | BG Bd | e/f/g fa |1 g2 gD :|2 g2 g>f |: ea af | 
 gf ed | B2 B/c/B/A/ | GE ED | G2 G>A | BG Bd | e/f/g fa |1 g2 g>f :|2 g2 g2 ||  