Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
Q:1/4=140
M:4/4
K:D
['B2 B^G A2', 'A d>efg a2 f>a g>fga gf dA']  
X:1
L:1/8
Q:1/4=140
M:4/4
K:D
 B2 B^G A2 f>e | d>cd>A G>FD>E | F>GAB =c.BAG | G.FD>D D3 =c | B2 B^G A2 fe | d>=cd>A G>FD>E | 
 F>GAB =cBAF | GFD>D"^NB1" D3 A || d>efg a2 f>a | g>fga gf dA | d>efg a>gf>a | gfd>d d2 f>g | 
 a>g f>a g2 fe | d>Ade !fermata!=f2 eB | dcAF GBAF | GFD>D D2 |]  