Construct a musical arrangement that blends the supplied motif while maintaining the specified alphabetical order.
X:1
L:1/8
M:6/8
K:Bmin
['', 'ABB BAG A3', 'Bdd dBG ABB BAG A3', 'ABB BAG A3']  
X:1
L:1/8
M:6/8
K:Bmin
 A |: BEE D3 | ABB BAG | A3 A2 G | ABB AGA | BEE EDE | ABB BAG | A3 B2 A | GED E2 A :: Bdd dBG | 
 ABB BAG | A3 A2 G | ABB AGA | Bdd dBG | ABB BAG | A3 B2 A | GED E2 A || Bdd dBG | ABB BAG | 
 A3 D3 | ABB AGA | BEE EDE | ABB BAG | A3 B2 A | GED E3 ||  