Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:D
['A Addf d2 Bc/d/ e>f (a/g/)(f/e/) d2', 'd2 d>c .B.A.G.F E3 e e>f (g/f/)(e/d/)']  
X:1
L:1/8
M:4/4
K:D
 A | Addf d2 Bc/d/ | e>f (a/g/)(f/e/) d2 cA | Addf a>f dd/e/ | fdec d2 || | d>c | .B.A.G.F E3 e | 
 e>f (g/f/)(e/d/) !fermata!d{ced}!fermata!c .A.B/.c/ | d2 .B.c/.d/ e2 .d.e/.f/ | 
 (a/g/)(f/g/) fe d2 z ||  