Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:Amix
['E/>F/E/D/ E>F E2 E2 A>B cB B>A', 'A>B c2']  
X:1
L:1/8
M:4/4
K:Amix
|:"A" E/>F/E/D/ E>F E2 E2 | A>B cB B>A A>B | c2 c>B"G" =G2 G2- | G>B e>c"A" A2 A2 | 
 E/>F/E/D/ E>F E2 E2 | A>B cB B>A A>B | c2 c>B"G" =G>B e>c |"A" A2 A>B A3 z :: 
"A" a/>b/a/g/ a>b"G" =g2 g>f |"A" e>f ec A2 A>B | c2 c>B"G" =G2 G2- | G>B e>c"A" A2 A2 | 
 a/>b/a/g/ a>b"Em7" =g2 g>f | e>f ec"A" A2 A>B | c2 c>B"G" =G>B e>c |"A" A2 A>B A3 z :|  