Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
Q:1/4=120
M:2/2
K:Amix
['A/A/A cA dBcA B', '(a/g/f/e/) ca eaca B']  
X:1
L:1/8
Q:1/4=120
M:2/2
K:Amix
 B | A/A/A cA dBcA | B g2 d BGGB | A/A/A cA dBcA | B a2 e cA A :: g | (a/g/f/e/) ca eaca | 
 B g2 d BGGg |1 (a/g/f/e/) ca eaca | B a2 e cA Ag :|2 (a/g/f) (g/f/e) (f/e/d) (e/d/c) | 
 B a2 e cA A ||  