Compose a piece using the specified musical pattern based on the alphabet and the provided melodic theme.
X:1
L:1/8
M:2/2
K:D
['f2 a2 f4 efed BcdB']  
X:1
L:1/8
M:2/2
K:D
|:"D" f2 a2 f4 |"G" efed BcdB |"D" ABde fede | f2 a2"A7" e4 |"D" f2 a2 f4 |"G" efed BcdB | 
"D" ABAB dBAG |"A7" F2 E2"D" D4 ::"D" D2 D2"A7" E2 E2 |"D" FD F2"G" G4 |"D" ABde fede | 
 f2 a2"A7" e4 |"D" D2 D2"A7" E2 E2 |"D" FD F2"G" G4 |"D" ABAB dBAG |"A7" F2 E2"D" D4 :|  