Create a musical composition adhering to the provided thematic and alphabetical guidelines.
X:1
L:1/4
M:4/4
K:D
['d D', 'f/g/ a f g']  
X:1
L:1/4
M:4/4
K:D
 d/c/ | d D F A | d D D d/c/ | d D F A | e E E d/c/ | d D F A | B g f e | d/c/B/A/ B c | d D D :| 
 f/g/ | a f g e | f d d f/g/ | a f g a | b e e f/g/ | a f g e | f d e c | d/c/B/A/ B c | d D D :|  