Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
M:6/8
K:G
['A B2 G', 'B2 c']  
X:1
L:1/8
M:6/8
K:G
 G2 A B2 G | c2 A B2 G | B/c/dB AGF | E3 E3 | G2 A B2 G | c2 A B2 G | B/c/dB AFA | G3 G3 :: 
 B2 c d2 B | efg dcB | A2 A B2 c | dBG G2 c | dcB gfe | fed gfe | dcB ABF | G3 G2 :|  