Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:3/4
K:C
['E2 c2 e2 f4 df e4 ce', 'B2 B2']  
X:1
L:1/8
M:3/4
K:C
 E2 c2 e2 | f4 df | e4 ce | d2 B2 GE | E2 D2{D} E2 | GA TB4 | G2 D2 C2 | B,6 :: B2 B2 B2 | d4 c2 | 
 g4 f2 | dedcBA | (3GAB B4 | C2 c2 e2 |{e} f4 df | e4 ce | d2 c2 GF | E6 :|  