Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:G
['G>A (B<d)', '(e<g) d<B']  
X:1
L:1/8
M:4/4
K:G
 G>A (B<d) e>d (e<g) | d<B B>e d<B B>A | G>A (B<d) (e<g) (e<g) | d<B G>B (A2 A)B | 
 G>A (B<d) (e<g) (e<g) | d<B B>e d<B B>d | e>fg>a b>ag>e | d<B B>G (A2 A)d || g>ab>a (g<e) (e<g) | 
 d<B B>e d<B B>d | g>a b>a (g<e) (e<g) | d<B B>G (A2 A)d | g>ab>a g<e (e<g) | d<B B>e d<B B>d | 
 e>e | e>fg>a b>ag>e | d<B A>B (G2 G) z ||  