Write a musical work incorporating the specified theme and letter-based framework.
X:1
L:1/8
M:2/4
K:G
['G2 Bc d2 BG', 'G2 b/g/d/B/ Gb a/f/d/A/ Fa g/e/B/G/ Eg']  
X:1
L:1/8
M:2/4
K:G
|: G2 Bc | d2 BG | e2 cA | FA D2 | G2 Bc | d2 BG | ec AF | G2 G2 :: b/g/d/B/ Gb | a/f/d/A/ Fa | 
 g/e/B/G/ Eg | f/d/A/F/ D2 | G2 Bc | d2 BG | ec AF | G2 G2 :|  