Develop a musical piece incorporating the designated alphabet-based pattern and the supplied melodic theme.
X:1
L:1/4
M:3/4
K:C
['e e']  
X:1
L:1/4
M:3/4
K:C
 G c c | f d2 | e c2 | G c2 | c e e | g e2 | g f2 | a g2 | e e e | f d2 | e c2 | a g2 | c e e | 
 f d2 | e c2 | G c2 |]  