Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/4
Q:3/4=110
M:6/4
K:D
['f g', 'f d d']  
X:1
L:1/4
Q:3/4=110
M:6/4
K:D
 A | A F A A F A | A F A A2 d | d A d d A d | d A d d2 d | f g a e f g | f g a e f g | 
 f g a a2 ^g | a3 a2 || a | f d d g e e | f d d g e e | f d d g3/2 a/(g/f/) | e3- e2 (f/g/) | 
 a2 z g2 z | f2 z e2 z | f2 z g2 z | f2 z e2 a | f/g/ a d e A a | f/g/ a d e A a | f3/2 e/ d e e2 | 
 d3- d2 |]  