Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
M:6/8
K:D
['BAF ABd', 'd2 A']  
X:1
L:1/8
M:6/8
K:D
|: F>ED D2 B | AF>d AFD | F>EE EFA | d>cB BAF | ABd e>dB | BAF ABd | F>EF dcB | ADF E2 D :: 
 d2 A e2 A | f>ed dAB | AFD D2 (d/e/) | f(g/f/).e/.d/{f} e2 d | d2 A e>fg | f>ed (ed).B | 
 A>BA ADE | FA{G}F E2 D :|  