Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
Q:1/8=180
M:6/8
K:A
['A2 c cAc', 'agf e2 e']  
X:1
L:1/8
Q:1/8=180
M:6/8
K:A
|: c | A2 c cAc | ecA ecA | fdB BcA | GFE GFE | A2 c cAc | ece a3 | fdf geg | aec A2 :: a | 
 c'ba b2 g | agf e2 e | aga f2 a | gec c2 c | fdf geg | agf e2 e | eae fed | cdB A2 :|  