Construct a musical arrangement that blends the supplied motif while maintaining the specified alphabetical order.
X:1
L:1/4
M:4/4
K:Edor
['B2 A', 'F G A2']  
X:1
L:1/4
M:4/4
K:Edor
 E E B2 | A A B2 | B B e2 | c d B2 | A B d2 | A B G2 | F E F D | E2 E2 | F G A D | E2 E2 || 
 F G A2 | A2 A2 | G A B2 | B2 B2 | F G A2 | G F E2 | F E E D | E2 E2- | E4 ||  