Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/4
Q:1/4=140
M:3/4
K:G
['G A', 'B A']  
X:1
L:1/4
Q:1/4=140
M:3/4
K:G
|: B | B A d | d2 c/B/ | A G A | A G A | e2 d/c/ | B A G | A B A |1 d2 :|2 G3 || G A _B | _B A G | 
 =F D/F/ D | D C D | =F3/2 A/ _B | _B A G | B c d | e3 | e d e | e3/2 d/ c | B A B | B A G | 
 F A d | e c A | A B A | G2 |]  