Construct a musical composition following the given alphabetical structure and incorporating the specified motif.
X:1
L:1/8
M:4/4
K:Amin
['A B']  
X:1
L:1/8
M:4/4
K:Amin
 e3 e c3 c | B c A B ^G A B E | c2 d e c d e2 | e2 d2 e4 | e3 e c3 c | B c A B ^G A B E | 
 c2 d e c d e2 | e2 d2 e4 | e2 e2 g3 f | e e d c d3 d | e d c B/ c/ d A B c | d e c d B3 B | 
 ^G A B2 E ^F G2 | A B c d B3 B | A B c2 d e f2 | c d B3/2 A/ A4 ||  