Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
M:2/4
K:C
['ee eg/e/ dd df/d/ BB', 'cec f/e/ df/d/ df/d/ BB dg/f/ ee', "c/B/ Ac fa c'=b _bg/e/ Gc eg", "c'/a/ ge/c/ df eg c'/b/c'/a/ ge/c/ B/c/d/B/"]  
X:1
L:1/8
M:2/4
K:C
 g/f/ | ee eg/e/ | dd df/d/ | BB Bd/B/ | ce gc'/g/ | ee eg/e/ | dd df/d/ | BB B/c/d/B/ | cec :: 
 f/e/ | df/d/ df/d/ | BB dg/f/ | ee eg/e/ | cc cc'/b/ | aa ac'/a/ | gg ge/c/ | B/c/d/e/ f/g/a/B/ | 
 cec ::[K:F] c/B/ | Ac fa | c'=b _bg/e/ | Gc eg | b_a =ac/B/ | Acfa | c'=b _bg/f/ | cc d/f/e/g/ | 
 faf :: c'/a/ | ge/c/ df | eg c'/b/c'/a/ | ge/c/ B/c/d/B/ | cc cc/B/ | Acfa | c'=b _bg/f/ | 
 cc d/f/e/g/ | faf :|  