Create a musical composition based on the alphabetic representation of the predetermined pattern and the given melodic theme.
X:1
L:1/8
Q:1/4=100
M:4/4
K:A
['Ac a2', 'fBBf Ac', 'Ac e2 ed/c/']  
X:1
L:1/8
Q:1/4=100
M:4/4
K:A
"_MS has time sig as 6/8, Key sig Gmaj" Ac a2 ag/f/ fa | Ac a2 ac/B/ Bc | Ac a2 ag/f/ fa | 
 ca ed/c/ fBBf :: Ac ed/c/ ac ed/c/ | Ac ed/c/ fBBf | Ac e(d/c/) ac ed/c/ | ca ed/c/ acBc :: 
 Ac e2 ed/c/ ca | Ac e2 ed/c/ Bc | Ac e2 ed/c/ ca | ca ed/c/ fBBf :|  