Construct a melodic piece using the designated alphabetic pattern and the provided musical theme.
X:1
L:1/8
M:4/4
K:G
['cF F2', 'dg g2']  
X:1
L:1/8
M:4/4
K:G
 Bc | dG G2 Bcde | cF F2 ABcd | AGBc dG B/c/d | d2 AB cABc | dG G2 B3 d | cF F2 A2 B/c/d | 
 g2 ag gade | dcAF G3 z | dG G2 Bcde | cF F2 ABcd | AGBc dG B/c/d | fded BABc | d2 G2 B3 d | 
 cF F2 A2 B/c/d | g2 ag gade | dcAF G3 z |: d/d/d^ce dg g2 | bgab ge e2 | df f2 abag | 
 f2 af g/f/e ^ce | dg g2 g3 a | b2 ab ge^ce | dfag gade | dcAF G3 z :|  