Create a composition by utilizing the given alphabet-based musical pattern and the provided melodic theme.
X:1
L:1/8
Q:1/8=360
M:4/4
K:D
['e2 A2', 'F2 A2']  
X:1
L:1/8
Q:1/8=360
M:4/4
K:D
 efg | a4 g4 | f2 gf e2 A2 | defg e2 A2 | defg e2 A2 | a2 ba g2 ag | f2 gf e2 A2 | defg e2 ^c2 | 
 d4- d :| z AG | F2 A2 F2 A2 | F2 A2 F2 A2 | A2 GA F2 A2 | A2 GA F2 A2 | FGAG FGAG | FGAG F2 f2 | 
 e2 d2 e2 ^c2 | d4- d :|  